personally, i don't think there is worlds of difference between gibson and epiphone. you're probably paying more just for the brand.
Ah.. But that's certainly an opinion.. I myself have tried excellent gibbies, and excellent epiphones (and bad ones for each brand as well).. What I can say is an excellent Gibbie resonates MUCH better than an Epi, and is overall better constructed.. I believe that they both have QC issues, but a good Gibbie is simply inspirational to play, and IMO, is indeed a world of difference..
As for the TS, it is good to start with a large budget.. But no point burning a few K on your gear if you are not motivated to actually learn to play at the end of the day.. Make sure you are fully committed before you make your purchase..
I can recommend that if you are getting a Gibson, make sure you get a friend who KNOWS about guitars (not pretend they know) to advice you.. There are plenty of great guitars within your budget at the moment..
General considerations:
Gibsons:
SG Classic (P90s to die for! Have to import this in)
SG Special (might be deemed as a "low-end" SG, but still good)
LP Studio (may be out of your budget)
BFG (versatile, finish may not be your pick)
Fenders:
American Standard Series (single coil heaven)
Edwards (almost everything within your budget, great guitars)
PRS:
SE Series (well worth the money)
Swing:
Prism SE (extremely versatile, nice feel and tone with piezo options)
Ibanez:
RG2550z (someone selling this at only 1.3k at the moment;
http://soft.com.sg/forum/guitar-buy-sell/71695-ibanez-rg2550z-reduce-price.html)
Anyways, the forums here have plenty of good deals.. Right now, I can say Pedal-itis and Hub4thailand are selling wicked axes at wicked prices..
http://soft.com.sg/forum/guitar-buy-sell/71809-gibson-67-reissue-flying-v-*repost*.html
http://soft.com.sg/forum/guitar-buy-sell/71807-fs-duesenberg-starplayer-special-*repost*.html
You can scout around for such ridiculous offers, and try them out with a friend if you feel you are still inexperienced.. But the most important thing is to know that a good guitar is a good guitar, regardless of the brand written on its headstock.. There was one single $239 Stagg tele (a jem imo) which was truly a great guitar.. I hate teles, but this made me feel like half the Gibbies out there were jokes.. Unfortunately the subsequent Stagg teles weren't as good as that, but still great guitars in their own right..