Originally Posted by
Peter_C
. . . Question - why would there be *more* knee stress if I go with a 'bent (or trike) where the crank is either below or level with the seat?
There is no extra stress, but you can easily create it because you can brace against a seat and push with full strength. Beginning recumbent riders are well advised to favor low gears.
Just the other day I was able to test ride a Rover. Even though I'm spoiled by riding an ICE Q and Volae Century, the Rover seems like a good trike to me. It would, I think, be well worth whatever travel necessary for a test ride.