for mid range guitars, check out Ibanez and Jackson too. Ibanez necks are superbly thin and smooth, and access to those upper frets is no problem at all with their All Access Neck Joint(AANJ). most models however have floating tremolo systems(Lo-TRS, Edge, Edge pro, Edge pro II), that could be daunting for a beginning guitarist, but who knows, maybe he'd love such a technical system, and become quite the whammy technician, i know i love it so much i don't even care about changing strings. for low end riffs...pretty much ANY guitar with humbuckers can pull that off, LPs do it no better than any other, all it takes is some skill, good EQing, and decent pickups. LP necks are pretty chunky compared to most fender/squiers, ibanez, jackson, pretty much everything, LP is probably the biggest. LP is a pretty mellow tone, because of the mahogony, and cause it's so bulky, a strat with a maple fretboard is going to be alot more bright and twangy compared to it, lending itself also to single coils.
in the end, make sure he plays a similar model first, and not just pick it out based on brand name, or looks, that's a big mistake when it comes to ESP guitars, the LTD line anyway, they look real nice on the internet, and sometimes in person, compared to other guitars, but the hardware and playability is right down in the crapper compared to jacksons and ibanez, i was quite surprised that the most expensive LTD i could find in the store was about 600, and upon fine tuning the tremolo, the cheapness showed, and had dead notes all over the upper register.
one of the most important factors is the neck, is the neck smooth, is it fast, and is it comfortable, it's pretty much half and half when it comes to nut size, 1 5/8 is what you usually find on strats and lps, 1 11/16 is what you usually find on ibanez, jacksons, but not always. that 1mm makes alot of difference to most people, some people prefer the larger nut, i switched from a 1 5/8 myself, and i love the added size, much more comfortable and cleaner in my opinion, but i don't HATE 1 5/8, it's all personal preference. painted necks are going to be slower, so are laquered necks, sanded necks are the finest in my opinon.
well enough blather, take him to a nice guitar store, and have him pick out nice ones to play, play them for more than 2 min though, unless it's like those ESP LTD i played...YUCK!! back to the shelf you go.