Used Bob Jackson August last year. When the bike came back looked uber cool, but after one ride looked sh1te! Paint scratched and chipped really easily! Also, they put the decals in the wrong place - like the Kona badge on the top tube - instead of being right up near the seat post put it slap bang in the middle of the top tube!
They also took bloody ages - 8 weeks! Fine if they do a great job.
My advice, stay clear of Bob Jackson.