Hey thanks everyone for the feedback.
Yeah, ESP/LTD and Charvel are two of the main options i am investigating at the moment, some of the suggestions we're already in my radar, happy to see i am already pointing towards something that makes sense.
Shape-wise i want something comfortable, with the upper part of the neck easily reachable. Big or small is not a problem, as long as i can play it sitting down: the Guild semiacoustic has been my main guitar for 10 years, and that's definitely a BIG body.
Regarding the neck i want something in the middle: not too fat as my Blacktone but not super-thin like the jacksons. What they usually call "rounded C" should do.
I don't like pointy horns but that single pickup LTD that le lambin linked above is quite appealing (headstock aside).
I like the Charvel San Dimas shape, the problem with Charvel is that there aren't many options with humbuckers + fixed bridge, unless with terrible colors.
Even if i don't care at all about Jim Root, its Jazzmaster V4 looks hot. Super clean white look, pearl blocks, 25,5", 12" radius, locking tuners..though it lacks a tone knob and active pickups. Probably the neck is quite thin too.
Another one that caught my eye is the LTD Sparrowhawk: the shape is weird but somehow haunting, it has a simple two-knobs-two-humbucker setup,with coil-split, which is a bonus feature i'd really appreciate. Radius is 12", the scale would be 24,75", but i could close an eye on that and just put slightly heavier top strings to increase the tension a bit. It's above my price range and not many units in the used market, at least in EU. Weirdly enough i found out it's a model designed with Bill Kelliher, i didn't even knew that. I seem to gravitate towards Mastodon's guitars without even wanting to, i guess my taste is similar to theirs.
Honestly the whole Musicman & Sterling lines really don't vibe with me at all, both shape and finish-wise..
(warning: now taking the memory lane)
Now that i think about it, when i was 16-17 and LTD Viper was my main and only guitar for 2-3 years: it was my first "serious" guitar, meaning it was the first guitar beside the sub-standard un-tunable squier inherited by my cousin, on which i moved my first step in the guitar world.
It the first time i think about that guitar since forever, i don't even know what were its specs, but i remember trying it in a shop and thinking it was the best guitar ever, especially compared to my previous one. Now strings were really close to the neck, and not hanging 1cm over the fretboard! it was about 400€ or less, new, paid with my savings and a little help from my parents.
My setup was that guitar, a tiny 15w yamaha practice amp or whatever was available in the rehearsal room, a big box Big Muff, og EHx Small Clone, Boss BF3, Ibanez Soundtank delay: ahhh, the glorious noise floor going "ghshhhhhhhhhhhhhh" 99% of the time...but life was waaaay simpler.