If I were to start all over I'd probably go with a linear tracker as well. Actually, probably one of the automated LTs.
The Thales is an interesting tonearm and I was eager to see it in person at CES a few years ago. When you touch the cartridge area, it moves easily in directions it shouldn't. While the idea is intriguing, I think it practice it will be incredibly difficult to make those extra bearing joints rigid. A frequency sweep of the tonearm like how Hi-Fi Choice and HFNRR used to do in the UK will expose these weaknesses.
Keep in mind that there's a reason why LTs aren't all that popular. There are just as many downsides as there are upsides - you're moving A LOT of mass in the horizontal plane compared to a pivoted arm, and it's not easy to do that.
Do you by chance mean the original Thales arm? (http://www.tonarm.ch/index.php?page=Thales-original). I haven't had the pleasure of trying it, but it looks really wild. I'm only familiar with their more straight forward Simplicity arm (http://www.tonarm.ch/index.php?page=simplicity). As someone pointed out, it sort of resembles a pair of chopsticks holding a cartridge.
Wow. Reading this thread. *takes his Debut Carbon and walks home*
On the flip side, I know folks live Dave aren't so much into that ancillary stuff but genuinely like vinyl because it often sounds better. The most straight forward reason for this is that better masters often make their way onto vinyl compared to their CD and downloadable counterparts. Mostly because people putting out vinyl are more likely to actually care about what they're doing (but certainly not always --- especially now that it has become more mainstream again). In my experience, you get some of the best bang for your buck by upgrading your turntable gear. Even spending more on a new cartridge can bring you a whole new level of enjoyment over something that comes standard with your table. In other words, diminishing returns are often less apparent when it comes to more expensive turntable gear versus other gear in my experience.As for linear tracking arms, I'll definitely give them another go at some point. I tend to think everything in this hobby has its trade-offs, that there's no free lunch so to speak, and with linear tracking arms it always seemed to be their extreme fussiness and unreliability that made them a compromise of sorts. In other words, they may have nothing but benefits musically, but most folks I know who have lived with them say they're an absolute bear to maintain. I know for some folks though that's part of the fun of maintaining an expensive rig. That's why someone I know has a Verdier Platine and isn't bothered pouring lubricant into it and catching it as it drips out onto the table below. Unipivots definitely have some major compromises and flaws of their own, but I admire their (relative) straightforwardness and elegance.
My frustration is that I want the best of BOTH. I've ripped a couple of records and I think they've come out alright, but it's a TON of work and I've still got sections that I'm not happy with due to my hardware/software limitations. I'm glad that most records these days are coming with digital download cards, but the majority of them so far have been .mp3s which are pretty much worthless to me. I've had one or two come with .flac downloads. The day all records start going down that road will be a happy day indeed.