It's fairly relative. I don't have a ride I can do that doesn't involve sections of climbs in the 8-12% range. If I leave my house, getting back to it involves some amount of that grade no matter which direction I go. On the vado SL, those climbs don't remain enjoyable for me. They are *hard*. Really hard. I do think the vado SL 5.0 might address some of that with the bigger gearing (the one I road was a 4.0). I also think a chain ring change could work miracles.
In less extreme riding (or, if I was more fit then I am), the vado sl would be spectacular. But when the "normal" ride involves 1,500 - 2,000 feet of elevation, it's something to think about. My 3-4k elevation rides are a hard no on that bike under current fitness and road conditions.
I think the next generation vado SL top end model is likely to have a bit more peak power and a bit more torque (50nm would be my guess) without too much other sacrifice. For me, that would likely make the difference on many of these routes.
For reference, my full power vado had 90nm torque and 540watts (peak I think). And many of those rides did *not* need turbo. But using the bike in "standard" sport mode is still double the vado SL. Something between those two on a light bike would be absolutely amazing on my crazy hills.
Yup...I can understand given those elevations. Though my area is not flat....my elevation changes are minimal in comparison with yours. I do have some 'work' to do on hills....but it is not agonizing with the SL. For your purposes I completely agree....a powerful SL would be the ideal.
I would like to play around with the full power Vado to see how I feel about it. At a glance....given my criteria for fitness first....the full Vado looked more 'moped' than 'bicycle' which defeated my purposes. It also looks like a whole lot of fun. I should buy my wife a full power bike like that so that I can have access to both. She would immediately see right through my ruse.
Is that full power Vado a mid mount motor?....or rear hub?