what about the sig x5 tactical? is it as accurate as the sig x5 level1?
I'm honestly not sure whether it's at the level of the L1. It probably is, but I don't know. I haven't heard that it gets any less attention than the other X-Fives from the German Mastershop -- but then I haven't heard that it does, either.
The Tactical will certainly be a
much higher-quality gun than any present-day American Sig, but part of the attractiveness of the X-Five/X-Six to me is the steel frame, and I would have a hard time paying X-Five Tactical prices for a Sig with an Al-alloy frame when there are X-Fives with steel frames that don't cost that much more. And I can say for certain that the other non-L1 X-Fives with steel frames will have the same mechanical accuracy as the L1. The frame, slide, barrel, and fitting will be the same; you give up things like the adjustable trigger, the Nill grips (which actually aren't Nills anymore on the L1's 2nd-gen. replacement, the "Classic"), and, sadly, a number of milled steel small parts for MIM (though Sig Sauer in Eckernförde does MIM much, much better than Sig Sauer in Exeter/Newington, which embarrassingly sources MIM from low-bidder, low-quality outfits like Indo-MIM), but the rest is the same.
Instead of a Tactical (or a Lightweight), I would look at the steel-framed X-Five Competition (1st gen.) or its replacement, the X-Five Entry (2nd gen.). There's also the steel-framed All Around -- which Sig can't seem to properly name, since they variously call it the All Around, the Allround, and the All Round on the very same website -- but that gives up another thing that's attractive about the X-Five, which is a SAO trigger.
Of course, I'm assuming here that you're not planning to carry one of these beasts. If you are, then an Al-alloy frame might well be the way to go.