Originally Posted by chickdigthebike
I am looking for something with comfort and ease- it must go up hills and be able to trail a carrier for kids. If anyone has any ideas I would LOVE your help!
You'll probably want at least 750W for the torque under higher weight loads, going uphill. I've done a lot of research into the question you posed here (excluding the trailer requirement) and I would suggest the $800 Dillenger 1000W front wheel kit. (dillengerelectricbikes.com) There was a review of the Dillenger 750W rear wheel kit at Dillenger 750W Gearless Electric Bike Kit Review - ElectricBikeReview.com
Battery is easily removed to carry with you
Cadence sensor snaps on, easy install
Motor inhibitor break levers
Relatively low cost compared to many other kits
Rear wheel kits can be troublesome to install, require special tools
Battery rack is not rigid and rattles/wobbles
I have not purchased any e-bike kits or e-bikes before, but this seems like the best solution without approaching the cost of a motorcycle or vehicle. The author of electribikereview.com actually owns a $4K e-bike, which to me is ridiculous. It doesn't offer anything worth that much money.
Also if you're looking for a bike as well, I'd suggest the Trek 7.2 FX. It's about $500 w/tax. It's a good city commuter. I ended up changing the bike seat, pedals, and tires. I highly recommend Schwalbe puncture resistant tires, like their Marathon line. Especially with an electric motor kit, to make it less of a hassle to change flats!