Better off going direct to a manufacturer than through a retailer in most cases - there are exceptions like if you're dealing with bigger brands like Gray Nics, or in the past, when Hunts G1 bats were £165 from Vitas - I do regret not taking advantage of that! The only thing I'd say is that there is no real best option - weight, budget and shape are probably the most important pieces of info to pass to the batmaker.
You want the bat to have a super short handle AND a short blade? Or is it either a SSH or a SB? Personally had customs made by H4L, Scott, RPC, Oxfordshire as of recent times, all of whom provided excellent quality bats.