I did a few hours training in a Tomahawk right in the beginning of my training then did the rest in a PA28.
A couple of weeks back I went back in a Tomahawk and realised how good the forward visibility was - you see a good deal of ground, which is great. I did find the trim very strange (it's basically a spring tensioner) but with all things I'm sure it's possible to get used to it.
The Tomahawk that I've seen advertised for sale seem to be very good value. In my opinion it's a good piece of kit for the money.