I haven't heard the newest Primaluna gear, but my impression of it over a couple of extended listening sessions that it was more "tubey" and very euphonic. That is what got me interested in tubes actually.
Having said that, I own a LS26 and a Vsi55 ARC integrated, and have heard Tomic601's 5se.
If you have the funds for the 5se, jump on it. It's likely to be an end-game piece, and if it's not, you'll recover most of what you spent for it if you're buying used, while even heavily discounted, the PL will lose a lot of it's value if you try to flip it, which you will probably more likely to do.
Some other options to consider. The Modwright preamps are really nice. I owned a LS100 for a long time. I replaced it with a Herron Audio VTSP-360 which I highly recommend.