The main difference it appears is the putter scales. The Spider has 15-25-50-100-150 and 300 where as the Manta has 20-40-60-80-100 and 300. The other stats are the same including meter speed. The one big problem with the Manta could be that it is the only putter with that scale and if you upgrade later you would have to learn a new scale. The scale for the Spider is the same for all 3 putters. The level 35+, the level 66+ ,and the level 92+ which in my opinion is the best putter in the game.