I'm running the CZ Custom basepads and a mix of CZ Custom and Grams spring/follower combos.
I like them because they give me 140mm length and 23+1 of 9mm and 15+1 of .40 that I use in USPSA's Limited Division.
The Springer pads will do the exact same thing. So will the Taylor Freelance. Go with whatever attachment system you like the best, because 140mm is 140mm. You aren't going to get higher capacity by changing brands of aluminum pads.