I know it's entirely subjective but I find a flatter, thinner but broader neck easier to play and hold down barres etc. Each to their own though and the only way to find out is to get your mitts round some necks
I had an Ibanez RG1570 for a while and the necks on those are about as flat, thin and wide as they come. I couldn't get on with it at all, I much prefer a bit more of a hand full. That Ibanez gave me hand cramps.
A mate had a Gordon Smith SG and that was a nice guitar, a bit utilitarian and bland looking to me but it played well and sounded good.
If you're thinking of Strats or Tele's, check out G&L (the L stands for Leo, as in Leo Fender, who founded G&L after he sold Fender guitars to CBS). They do two versions, the American made G&L, and the Korean made G&L Tribute series. I've had 3 of the Tribute series and I can honestly say they are better than any Fender I've played short of the Custom Shop. G&L make some seriously good guitars. If you're after a tele, try a G&L ASAT Special. You wont be buying a Fender after that. For what it's worth, I'm no fan of strats (hate the shape), yet my no 1 at the moment is a G&L Legacy, I can put up with hating the shape when it plays and sound as good as it does.
Going back to Gibson, you could look out for a Nighthawk (or a Blueshawk). I had one for 15 years as my main gigging tool and only sold it 6 months back. They're rare as hens teeth as Gibson discontinued them in 1999 but they fetch less than a Les Paul S/H and are much more versatile.
L to R: Gibson Nighthawk, Gibson Les Paul Studio, G&L Legacy, G&L ASAT Special, Stonebridge GS40CM