Re:
Everyone seems to slate Girvin Flexstems but for just one year BITD they seemed to be on nearly every other bike I saw..... Anyway moving on.....
Depends on the bike but I think Syncros, or original Answer Atac, are never outclassed by any build & still have reasonable availability. Best budget buy I'd stick my neck out to a shower of arrowheads & say a Club Roost I Beam can't be faulted. As an OEM choice Kona Velocity were solid but if 'The best' goes by what people are willing to pay then a NOS FTW noodle stem with an old semi crumbling install sheet might be near the top of my wish list.