Indy,
I've got an Epi (not Tokai) and in the shop I compared it to a Gibson SG Standard, a Gibson SG Faded Special and a regular G400 Epi.
Regular G400, Chinese. Generally good quality throughout. Sounded a bit raspy, but would be OK with new pickups. Big neck. £275
SG Faded Special, USA. Very cheap feeling. Scratchy to play - the rosewood felt really, really dry. Harsh pickups, again would sound OK with a pickup change. Not worth the premium over the G400 in my opinion. Huge neck. £599.
Used SG Standard, USA. Not a bad example. Good quality throughout, nice feeling neck, generally as a Gibson should be. Sounded a bit thick for an SG I thought. Medium sized neck. Nice guitar, but £799.
My '65 Epi, Korean "Custom Shop". Two piece body (VERY well matched), deep cherry colour, great thin neck with proper access to the top frets (all other SGs had bigger neck joints causing access issues). Surprisingly good pickups, Alnico V with a bit of an edge. Broadly similar to my current Riff Raffs, but not as refined or articulate. Most SG-like guitar of the lot. £349.
I've since completely upgraded the guitar with the Riff Raffs, complete USA spec wiring (including top spec CTS pots and orange drop caps) a TonePros bridge and a Tusq nut. Overlal the guitar owes me about £650 I think, but it knocks Gibson SGs for dead. The closest thing to it would be a '61 re-issue at £1100+, nearly double the cost. I wouldn't swap mine for a Gibson and it's my main gigging guitar. Everyone who's played it has loved it.
Try a few Korean Les Pauls and if you find a good one, buy it and gradually upgrade it. They make great workhorses for reasonable money.