FYI, I think that build quality on a non-manufactured car has more to do with the builder than the manufacturer.
I built my FFR and think the kit is VERY good and can be an excellent car, it all depends on how much time, money, and patience you are willing to invest. There are better kits, but I think the FFR is the best Value (but I'm biased
)
Good luck with whatever you choose, I'm sure you'll enjoy it.