My dilemma, too. At the moment, my cycling is from home - almost all on the unpaved rail trail or on rough country roads. The dropper post on my Trek Powerfly 5 hardtail has been replaced with the Thudbuster ST which takes up about the same space as the dropper. The dropper will find a more permanent home in 2019 on my R&M Homage which has comfort-oriented full suspension. Such are my plans, anyway.
I rode mine for some time set lower than "allow a nearly full, straight leg extension on the down-pedal". When the LBS noticed, they pointed out I should be a good 3-4 inches higher for "proper form". I took their advice, and have ridden higher since then. Puts me in the tippy-toe-at-a-stop position. (During which, I just stand flat footed on my left, usually, and allow the bike to lean left under me as needed. May not be easily feasible for all riders, I realize.)
What I've observed in my case, at the higher setting is a general sense of less leg fatigue pedaling (particularly on my longer rides, like 30-40 miles) than before. No throttle here, and I aim for lowest PAS I can get away with, so every ride is pedaling (other than coasting bits or downhills.) But, I want to pedal more than not pedal anyway, on most of my rides.
But at the same time, I've noticed more fatigue (or really, more "discomfort" of a sort) in my wrists, as the higher seat naturally means I tilt (upper body) forward more than before, putting more weight on the handlebars... I'm considering a small stem riser as my next gear update, to return my position a little closer to "upright cruiser"; I don't mind some degree of leaning forward posture (I was not in a true straight-upright position before I changed seat height) and since I'm rarely concerned about the aerodynamic "cost" of a more upright position (and for me, that position is a little more comfortable) I'll take the little extra comfort
...I allowed someone about my height test ride my ebike and he almost fell over when he came to a stop because he tried to stay seated. I explained to him he needed to step off from the pedals when he stopped but he had no clue how to do that because he grew up riding with a low seat height and significantly bent knees while riding. He didn't even consider that it was not efficient use of leg power to ride like that...
I rode mine for some time set lower than "allow a nearly full, straight leg extension on the down-pedal". When the LBS noticed, they pointed out I should be a good 3-4 inches higher for "proper form". I took their advice, and have ridden higher since then. Puts me in the tippy-toe-at-a-stop position. (During which, I just stand flat footed on my left, usually, and allow the bike to lean left under me as needed. May not be easily feasible for all riders, I realize.)
What I've observed in my case, at the higher setting is a general sense of less leg fatigue pedaling (particularly on my longer rides, like 30-40 miles) than before. No throttle here, and I aim for lowest PAS I can get away with, so every ride is pedaling (other than coasting bits or downhills.) But, I want to pedal more than not pedal anyway, on most of my rides.
But at the same time, I've noticed more fatigue (or really, more "discomfort" of a sort) in my wrists, as the higher seat naturally means I tilt (upper body) forward more than before, putting more weight on the handlebars... I'm considering a small stem riser as my next gear update, to return my position a little closer to "upright cruiser"; I don't mind some degree of leaning forward posture (I was not in a true straight-upright position before I changed seat height) and since I'm rarely concerned about the aerodynamic "cost" of a more upright position (and for me, that position is a little more comfortable) I'll take the little extra comfort
Going off topic here for just a second regarding wrist comfort, I recently read something that made a lot of sense to me, regarding most handlebars being straight across (or nearly) and comparing those to handlebars that are angled back - beach cruiser style. The writer was suggesting that the straight set often led to wrist pain and hand numbness for the same reasons one might expect to lead to carpal tunnel syndrome. Since, I've been on a couple of rides with this thought in mind. Now looking for something with the ends swept back. Nothing as drastic as a beach cruiser, but maybe a compromise. -Al
Going off topic here for just a second regarding wrist comfort, I recently read something that made a lot of sense to me, regarding most handlebars being straight across (or nearly) and comparing those to handlebars that are angled back - beach cruiser style. The writer was suggesting that the straight set often led to wrist pain and hand numbness for the same reasons one might expect to lead to carpal tunnel syndrome. Since, I've been on a couple of rides with this thought in mind. Now looking for something with the ends swept back. Nothing as drastic as a beach cruiser, but maybe a compromise. -Al