Sometimes we're short and to the point, lacking the finer details. Usually that's because the answer is so unambiguous, that it need only be stated quickly and sometimes tersely. This is one such topic. Para is the default choice by popularity. Para would have been a good choice, if they were more interested in selling quality workmanship and material than they were flashy gimmicks, and the buyer stuck to the P-14 series. Para can still be a good choice of the buyer grabs P-14 type, then scraps every single part but the frame and rebuilds the weapon anew with competant hands and quality parts, or starts with a Para Frame Kit (so long as you don't mind a cheap ass cast frame. Their full size 14 round mags actually have proven (to me over the years) as a fairly reliable design.
But, other than a few dedicated race junkies, most informed people see the financial futility of building a silk purse out of a sow's frame and go with a much better, albeit less sexy outfit like STI.