Newbie to the site so a big hello to you all

I've signed up to pick from your collective wisdom on all things G&L.
I've had "approval" from my other half to buy another electric and rather than the PRS SE I was originally planning on, I thought I'd take advantage of our upcoming trip to NYC to visit the family (wife is from the US) to look at something a bit more interesting. US G&Ls are pretty rare here in the UK so already that's adding to the attraction.
A few years back a lunchtime walk saw me popping into Sam Ash and walking out with a beautiful Montego Black US Deluxe Strat.
So I'm thinking of seeing what I can pick up this time, except a lack of funds means I'll have to look for something used but in great condition.
I have a couple of questions on where is likely to be a good place to pick up a used G&L - I've found GuitarCenter online, have you guys bought from there previously? How reliable is their online description? Are there any other dealers you would recommend in the NYC / NJ areas?
Also a couple on neck radius - I'd prefer a 12" radius, which i think the S500 and Invader both have, but does the Legacy Deluxe have a 12'? The normal Legacy is the only one with a 9.5?
what differences are there between the standard models and the Deluxe models?
I think I'd prefer the s500 or maybe invader just because it's so cool looking but would be open to a Legacy.
By comparison my guitars are a Tom Anderson Classic, US Deluxe Strat and JP Aerodyne Strat and my amp is a MesaBoogie Express 5:25, a ludicrously great little box.
Any and all advice is gratefully received.
I'll post pics of whatever I end up with
