My latest thinking is just to get a PL350 and put it on my current old heavy Trek hybrid (7100). I might be able to get one for $500 off because the battery is "certified 90%" - apparently from kits that got returned. That's a huge discount off the $1800 price so I figured I'd ask for opinions. Assuming I can recharge it 900 times instead of 1000 or so, it will still last at least three years and likely longer. And by then I can assume that the batteries will be better and cheaper.