Welllll.....if you must buy new,
and you are into strat and tele style guitars, then SX is the brand to look at - they do a great tele clone, if you can find stock! The Strat clones are also really good.
If you want a LP/SG stye, Epiphone do them best (at the price)
And, my choice, a HSS 'Superstrat", I'd likely end up with a rock oriented Ibanez. Or maybe a Yamaha Pacifica if I could stretch the $$$ to the 212 or....I'd get a SX strat (or tele) and swop the bridge SC for a Tonerider rocksong Humbucker or similar - bit of work though.
guidothepimmp it would be handy to hold and play the guitars before buying.
+1, I'm particularly to a certain neck profile - 50's era guitars tend to have a clubby 'baseball bat' (aka D profile) style neck - not my taste. While 60's era have a slimmer C profile, which I prefer. Also radius of the fretboard (flatter 12-16in radius for lead, 7.5-12in for rhythm) tends to have a influence on playing style and comfort.
If you can get hands on what you are considering before buying - that would be best - especially if you can just drop into a store or three to compare them back to back. If not, then buy from reputable retailer that has decent returns policy - if you get something you really don't like or it's a lemon (it happens), then at least you can get something else!
At around 6k, expect to spend a little (R300) on a basic setup and some decent strings - it'll make a world of difference.
If it were my 6k...
I'd buy a bass ;p
But were it have to be a guitar, then a 2d hand Yamaha THR10 amp (+/- 2-3k) and either a new SX (to be modded) or a 2nd hand RG Series Ibanez (I love the necks),
You will play more if you have a amp that's easily accessible - I've done the PC thing at length - it works and can be fun (Amplitube on a iPad is impressive!) . But I know, the easier it is to play, the more I'll play. And the Yamaha THR is perfect for what you want to do.