I have a Subi in my car (with a 2D). I wish I had a Honda. I have a SU 2 seat mid engine ultralight. It's ridiculously quick and nimble. The key to a light car is keeping it light and the mid engine really balances the car and makes the handling a lot better. A rear engine in a light car can make the front end too light and potentially make the car very unbalanced. depending on what your objective is, who's it for, where you taking it, skill level...you may want to see what combo would best fit as a mid engine car/driveline.
My Subi works great. Lightweight, decent power. As a mechanic, I feel that a Honda is easier to work on and from what I read, cheaper.
Both of these depend on how much power you want. Subi's seem to be reliable up to 450-500hp. Above that the rebuild cycle and issues become more frequent. Honda's have a pretty good record of making good power and maintaining reliability.