a major reason not to buy the el-diablo would be if you don't like it, lol. I liked it when I tried it out, but I've heard some people struggle to get a good lead tone from it... that might be a concern if you want to do a lot of shred.
mainly as far as the amps go, you want to try out everything in a similar price range to the ED. Engl, Framus, Soldano, Cornford, Diezel, Mesa, splawn (probably hard to try out, lol), Koch, etc., etc., just to make sure which amp is the one for you.
Ditto the guitars. You want to try everything you can get your hands on. I wouldn't be too keen on spending £700 on a Korean guitar myself, to be honest (as those LTD and Schecters are). They tend to have worse quality control, use worse components, use lower quality timbers etc., etc. Some of the higher-up Korean ones have a tendency to throw Seymour Duncans at the guitar to persuade you that you're getting a pro guitar, and pay little heed to the quality of the timbers and hardware, which play, IMO, a much bigger part- if you can solder, poor pickups are one of the easiest fixes you can do. It's much harder to correct dead-sounding wood, or poor hardware if all the decent hardware isn't a direct retrofit (as it frequently isn't).
You also need to really decide if there's a type of wood you prefer, a type of construction, whether or not you want a locking trem, etc., etc.
I didn't really give you any answers there, to be honest. But I think you need to give us a bit more info, or decide yourself what you want, a little more first...
:drink:
