Dax Rush
I think the Dax Rush looks fantastic, it seems very low and aggressive which is a definite plus in my eyes. They also have a long wheel base version that makes it easier to fit tall people which would have suited me. They are also based in Harlow which is very close to where I live.
Cons:
It is one of the more expensive kits if you don't want to have to source a donor sierra. A friend of a friend built one and he had to cut down the alloy panels and bend them to shape, this isn't a problem but isn't a job I fancied baring in mind the cost of the kit. The nail in Dax's coffin for me was when I mailed them to arrange a visit and I didn't get a response.