Javier at JG is a Talent with a capital T, but is about the shittiest, shadiest, complete piece of shit you'll ever do business with. If you get your part from him, yes IF, you'll never get your core refund.
DH-racing, meh all I've ever heard bad about him is that he's an asshole, and that he and Omni both claim to have invented the LS/VTEC and argued about it on forums in 1765. Since all I've seen Omni do is get the chinese to poorly clone other's products or ideas, such as MY Motorola MAP sensor in a stock enclosure, I'm going to hand the title of that innovation to DH. My boy Wes found him randomly, has talked to him on the phone 3-4 times, and keeps buying TBs from him, loves the guy. That says a lot, because Wes is good people.
About the only top tier V8 talent that plays with Hondas is Brad Z at RLZ. Then again, RLZ has a rep for being impossible to get ahold of to give your money to, as they take on R&D projects for a lot of non-Honda racing teams (I know he's done some BMW work for BTCC, lots of others) and that shit gets priority. For being 2.5 hours away I get a certain amount of overflow from RLZ; 50% of it is Howard being super rude and 50% they can't get ahold of anybody.
Since we're on the subject of Talent, Tony Palo is very bright. He makes no secret that he's in it for the money, which is why he's got an online store full of only the blingest shit, but despite that he's dropped tech on me, and called his contact at AEM over a hardware modification when I couldn't get anywhere, out of the goodness of his own heart. He may be a big balla, but he takes care of people who love cars, too.
Oh yeah, FR makes very very nicely fabricated manifolds that are no better designed than anybody else's, and sometimes they drop the ball on wastegate placement. I see all of the non-Honda FR guys going around forums helping people out, but Geoff is an arrogant prick. Their stage 1 backdoor kits are pricey but very nice.