From my experience of jap guitars (and being a les paul man), Greco are the best for quality, i'd try and find an early 80's version. They are really top quality guitars, long neck tennon, great attention to detail. You could prob pick up a good one for about £300, but you've obviously got to add shipping and tax on to that.
You could also try burny (not quite as good, but nearly) or Aria, or the Yamaha Studio lord ; i think in the late 70's early 80's all these guitars came from more or less the same factory!