Looked at the Tisas many times and been tempted, but being 1911 poor I really have no "need", only a restrained (so far) "want".
We've already gone through the phase where junky questionably constructed 1911 clones have come and gone (AMT Hardballer comes to mind - only one I'm personally familiar with that saw an acquaintance wear one out in a season with less than 1000 rounds) and with so many to choose from anyone producing real sub standard junk doesn't last very long once a few unfortunates spread the word on the 'great bargain' that wasn't . . . .
Point being, when the strangle hold of patents went to history the 1911 was so ubiquitous and proven that anyone with any modest manufacturing skill and equipment could produce a decent one. And did. Fit and finish are the benchmarks now and CNC machining has made it easier to mass produce more repeatably accurate parts. The profit raked in from even these bargain brand guns is significant compared to what I'm guessing the actual costs to produce are, and the staid old brands and custom gunsmiths make out royally from their offerings, many times giving us only a name brand in comparison with the practical end product. The cost verses reliability and quality of materials climbs drastically (IMHO) when a name like "Colt" or "Wilson" is attached and it is definitely a situation of diminishing returns as the brands and experts who started all the modern improvements and reliability now have genuine competition from what some would call the 'cheap-o' brands'.
I love the S&W's, Colts, and Kimbers, but find I can't wring any more accuracy or practical reliability out of them than a lot of the lesser brands I have or have had. Admittedly, I've been able to do fit and polish work myself to many of them that comes usually only from the more prestigious names mentioned - in that regard you get what you pay for. But the gap has narrowed greatly and one gets a whole lot more for their buck from the more pedestrian brand offerings than when I started - if you wanted a quality 1911 there was no question - you bought a Colt (but even then there was no guarantee it would run reliably right out of the box without tweaking, especially if you wanted to use hollow points or semi-wadcutters).
Many of the 'lesser brands' are coming out of the Philippines and eastern Europe, and many are made in the same factories and marketed as competing brands.
I bought a custom comped 1911 built to my specs and it was a thing of joy and beauty and I rode it hard. But I paid more for the fit, finish, and name attached than the practical difference in function and reliability. After all, we talk about them, compare and show them off at the club/matches/etc. more than most ever shoot them. Yeah, there are exceptions to that (I was one of those and shot with plenty like me) but I didn't run in circles with sponsored shooters who had crates of ammo delivered to them. Ah . . . the old days . . . getting old is bittersweet.
Bottom line, I would buy a Tisas in a heart beat and have owned other lesser brands that perform equally as well; admittedly I haven't and likely won't put the rounds through them than I did the Series 70 custom Colt back in the day but I imagine I probably could.