Its like a long semi rimmed 9mm, lots of speed, If you are interested in this round I would suggest something in 9x23 winchester, same potential without the risks of the rim
It is also IMO the single most accurate round to be found in a pistol. I'll put any of my Supers up against any .45 ever made, any day of the week. Rhino and Slow1911's can both attest to seeing a number of 1" 50 yd. groups from various 1911's in .38 Super.
If I could only have 1 gun, I would pick a Super without any hesitation.