My Gawd, Wilson is killing me! SFT, SFX, EDC X....My guess is this
Is akin to a full size 1911. Like a 2011.
And that edc is more of a scaled down version
Looks like SFX is more of an "Officer" size (3.25"), at least for the barrel, holds 15 rounds. SFT is a "Commander" barrel (4.25"), holds 15 rounds. EDC is 4" barrel, 15 rounds without magwell, 18 rounds with magwell.
But to be fair, can you ever really have too many 1911/2011 options? I think not.