I'm not too fussed about the spec at the moment because I'm at the stage of just considering what's available but so far I'm thinking two pickups, at least one cutaway and preferably a long tailpiece setup (rather than something like a TOM or wraparound). It's potentially not very important but it'd be nice to get something in a solid colour rather than sunburst, though also not SG style cherry.
My budget is quite wide-ranging because I'd happily spend more on a nice enough guitar but I'd also be ok with something quite cheap if it was good enough to last a while. So I guess I'd say £200-1,500 but I'm probably most likely to buy one in the £500-1,000 range. Having that wide a budget is actually part of the problem. Too many options.
For what it's worth I absolutely love these (the gretsch isn't that thin and only has one pickup but it looks nice) -