I picked up a Tisas 2011 last week. Paid a little over $900 for it locally. It came with 2x17 round mags and a bushing wrench I'll probably never use. Trigger was 5.5# out of the box so I adjusted it to about 3# before taking it to the range.
It fed and fired fine about 200 of my reloads, which were 135gr coated lead running about 1050 FPS. The only issue I had was brass to face. It would consistently put ejected cases on top of my head or in my face. I tightened up the extractor tension a bit but no dice. I reprofiled the ejector tip and now it ejects properly.
Accuracy was good, easy to put them in one hole at 10 yards. Sight regulation was right on for my particular load but the rear sight gap was slightly wider than I’d like. Unfortunately, the rear sight seems like a unique dovetail so it might be difficult to replace it with a different aftermarket sight.
Springfield Prodigy mags worked as well as the Tisas mags. Slide lock back was consistent with the Tisas mags, can’t remember about the Prodigy mags.
The barrel uses a Clark-Para style ramp. The top of the ramp had a sharp rollover but it didn’t seem to impede feeding. The throat was long and a 9mm Manson finishing reamer removed no metal at all (the Prodigy required reaming). The bullet profiles I tend to use in my reloads will stick in barrels with short throats (like FN 509s) unless I load extra super short, so I'll ream the barrels with a finish reamer to cut a proper throat in them. Fortunately the Tisas shop thinks like I do :D
One pet peeve was the sharp corner of the frame right below the serial number. Other manufacturers bevel this edge to varying degrees, but the Tisas had none at all. Depending on your grip and hand size, this could be a problem. If you have a high enough grip, this edge will rub a hole in you before too long.
The manual said nothing at all about what red dot sights are supported, or what the optic screw pitch was. The slide seems to be cut directly for the mini RDS direct mount, the RMRCC pattern that is shared with the Holosun 407k/507k sights.
I have a lot of 2011s of different flavors, and I’m favorably impressed with the Tisas DS, I give it two thumbs up.