I'm not the most knowledgeable about different turntables, so my experience is rather limited. I've only had a Rega P3, Rega P8, and then made a (very large) jump to the Dohmann Helix One Mk2. The audiophile friend who's been in vinyl for decades was very impressed with the Dohmann. Coming from the Rega P8, it's a world of difference: a vast improvement in every aspect: detail and clarity most obviously improved to my ears.
Yes, I'm probably not describing it very well, and we're probably talking about different aspects of the sound quality. The "bloom" that I hear from the tubes is what makes me feel most like the instruments are in the room with me (which is not a real experience at all, but rather a very engaging experience). The ambiance of feeling like I'm in the audience is not the same to me as the sense that the musicians are reverberating within my head, or "in the room" per se (the "bloom", as I'm describing it).
:-) Yes, I think we have quite similar musical tastes: I am driving the Sound Lab 745 PX's with the Ypsilon Hyperions mostly, although I'm also using Lamm M2.2's. Both do an excellent job to my ears, and both are hybrid amplifiers.
Let me know how you like the Lyra Atlas SL, when it arrives. I've personally moved on from the Koetsu Urushi Black, and replaced that cartridge with a My Sonic Lab Signature Platinum. I'm not sure which I enjoy more between the Lyra Atlas and the MSL. . . both are excellent MC cartridges.