My wife has a Gazelle Medeo T10 and we're quite happy with it overall. I disagree with Stefan's #s for range, as we have done 30 mile rides and still been at 50% on hers, although you should be aware the whole 'battery measurement' as well as range is kind of a mixed bag, meaning measurements aren't exact (you can look up modern lithium battery discharge curves to get a good feel as to the why - they are much closer to an 'on/off' charge vs e.g. a linear sloped discharge), and range is VERY dependent on the assistance level selected as well as the terrain (e.g. riding up uphill on a long slope will consume much more power than downhill or level ground).
You should also consider realistically where/how you will be riding. 'around lake and river trails and rail trails out of town' could be anything from nicely paved to more rough/aggressive rocky, rooty trails, and that will make a big difference in no suspension, front fork only, or maybe a full suspension bike.
My wife's Gazelle/T10 does well for road, paved and hard-packed trails but is quickly out of it's element for her (athletic but no type of off-road experience on any vehicle/bike/...) once things get bumpy, rooty, or steep off pavement. This isn't too surprising as it's geo and design is much more commuter/road bike, and while I can manhandle it a bit, it's not exactly good for even smaller jumps and the like. Yes, full suspension will reduce some amount of efficiency and range when you don't need it, i.e. in pure (flat, smooth) road riding, but it's worth it's weight in gold when even some roads become full of potholes or have some debris on them, IMO. You need to decide on the tradeoffs that work best for you.
If you're certain you'll never take off-road serious or go off of hard-packed casual off-road, something like the Ultimate or other front-fork only bike is probably just fine. Also consider if you want or NEED attachments, e.g. water bottle, or pannier, etc., as some bikes have very different options, with for example, carbon fiber full suspension bikes being the most difficult to attach any type of rack or pannier to. May or may not matter - for YOUR usage. If course, handling of bikes, and ebikes is also impacted when adding additional racks and loads to them (especially unsprung weight, weight not being handled or run through forks or shock absorber), so again YMMV depending on the need.
Another option could be one of the 'lower powered but lighter' ebikes but these get speedy quickly. They are more human powered, with lower assistance levels, but if you're doing human-powered 20-30mile rides right now, it may be another option to look into. Levo SL and Orbea Rise come to mind but there are others now, including one from Trek although I don't recall their models, and most if not all of them are full suspension bikes AFAIK.
Trek,
Specialized and Gazelle all make solid ebikes and I wouldn't 'avoid' one over the other or 'always' select one brand over the other, more about working out the features you want/need for the majority of your riding and then sort who makes a model that best/better fits you and within the $ you're willing to pay.
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