89 535i E.A.T. Chip

I've been thinking about investing in a chip for my 89' 535i and i was wondering which chip i should buy. I have heard lots of comments on both the Mark D'Sylva (E.A.T.) and the Jim Conforti, but was hoping there might be someone who has experienced both hands-on maybe. If anyone has ANY comments on these chips, or other chips also, it would be highly appreciated!!!

I have a Jim Conforti chip in my 535i and it really wakes up the M30. I got mine before Mark D'Sylva had released his version, but I have heard nothing but raves for his chip. I have read several comments from those who had replaced their JC chip for the EAT and, although they are very similar in performance, the JC chip appears to give sightly more low end grunt. The EAT chip has a much better price than the JC, so the EAT looks like the best bang for your buck, IMHO.