Before you decide on a trike, test ride 2 wheeled recumbents too. Go somewhere that you can test ride as many as possible. I got a trike (loved the idea of it, some parts of it, but ended up going to 2 wheels). With 2 wheeled recumbents I had to ride about 8 different ones before I found "the one". What I thought I wanted when I went to the store isn't what I came home with.

FYI, I went to a recumbent mainly for shoulder issues... but the relief I got from going to a seat instead of a saddle was an added benefit.

I even rode 2 that were nearly identical in specs but found a preference for one over the other. Ended up with a Bacchetta Giro 20.