Lots and lots of 'bent trike riders at bentrideronline.com. And they are eager to help newbies find trikes.
Try the Recumbent forum here, too
Sun trikes have good reputations and are available to buy although not always to see or test-ride, through most any bike shop, but are generally not light.
http://www.sunbicycles.com/
Cranky beat me to it.