I have 2 (so far). A customized Colt that I guy had worked up as a competition gun and a Kimber Stainless Target. Both are great shooters and more accurate than similar quality 1911's I have in 9mm. Easier to reload also with the slightly longer case. Ammo is more expensive, but reloading takes that off the table. Found a better pic for the second set.
The original .38 Super had a poor reputation for accuracy since they headspaced on an inadequate rim. Once the manufactures started to cut chambers to headspace on the case mouth, like most other semi-auto rounds, accuracy improved dramatically.
They were very popular with USPSA and some other "practical" competitions shooters because they could be loaded to "make major" power factor without going too far overboard with pressure and the loadings also made compensators work well. When the USPSA allowed "major 9" loadings the .38 Super (and .38 Super Comp, basically a rimless .38 Super) fell out of favor since the brass was much more expensive. For most USPSA matches the shooters loose their brass and that made the 9 mm a lot more attractive.
Several friends who are active in USPSA have either retired or sold their .38 Super guns and now run guns using major 9 loads.
As an end user, excellent caliber for personal defense when loaded with Barnes all copper bullet ammunition by Buffalo Bore and Double Tap...can be loaded with select .357 caliber bullets at factory .357 mag velocities, relatively low recoil and very fast cold split times.
This is so like a "thorn amongst the roses" that I hesitate to post it. I have several 1911 Colts but my only .38 Super is this nickel RIA. I do have a Colt LW Commander 9mm I hope to rebarrel in .38 one day soon.
I've always liked the ballistics of the .38 Super. Back when the cartridge came out, the FBI used the Colt 1911 .38 Super because of its ability to punch through car doors when the .45 would not. I like the 9 round magazine (10 with a bumper on the bottom) and the .38 Super recoils less than the .45 while providing more muzzle energy. When Colt marked the right side of the slides with 100 Years of Service in 2011 (was that really 8 years ago already?), I just had to have one of their Colt Custom polished .38 Supers. I put my grandfather's old mother of pearl handles on it and they feel and look great.
Then I had to have one of the Talo limited edition Commanders with the lightweight aluminum frame too. It was just about perfect with the tritium front sight and plain rear, beavertail grip safety, and extended manual thumb safety I had the bobtail mainspring housing installed and finally found a permanent gun to place my ebony/ivory scrimshawed Bald Eagle handles on (I've had them since 1984 and I trimmed them to fit the bobtail).
A Hopp Gunleather holster with shark inlay and white stitching to match my .38 Super LWT Commander:
I've owned and reloaded 38 Supers since the '70s. Mostly Colts, but currently a Kimber and STI. Also have a 100+ year old Colt 38 ACP. I enjoy both, but have to be careful not to mix up the ammo between the Supers and the old Colt