Putters definitely have inherent advantages to one another........
SBST (straight back straight thru) golfers benefit immensley from face balanced putters while ISI (in square in) golfers would benefit more from toe flow...
whether you are a "feel" player or a "mechanical" player, putter design, shape, weight, material, length, grip, and finish are all vitally important....
case in point...
over the winter i acquired and sold (like an ass to a nice guy in north mexico) a handmade stainless softtail, couldnt "feel" the putts on my carpet for whatever reason... while at the PGA SHow in january, I sprung for a very similar softtail but with a MUD finish, from the first round with it at grand Cypress I was making putts from everywhere.. easily over 125 feet worth... Im a 12 handicap golfer who putts like a 1 handicapper... and the putter "inherently" has much to do with it... the grip/finish/metal combination just resonate to me so clearly and purely, i have been using the stick exclusively for the last 25 rounds or so....
as far the "MINI"-fad ... i do think the putter, in terms of collectors value, has jumpoed the shark... for a while there were only 5, and now the count is well over 100... easily accessible for all of us... I had a betiniardi 3/4 about 18 months ago and sold it because it didnt fit mystyle.. too face balanced... skipped on another 2 for the same reason... but i just ordered a Byron with a shorter neck to increase the toe flow, hopefully, and make it suitable to my swing.. that and because it should be dead effin sexy...
and speaking of sexy... having a "sexy" putter does mean something to me... it gives me confidence having a "sweet stick".. and confidence in putting is huge... especially with the left to right 5 footer for $20.