I have both an ESP EC-II and a Jackson RR, and I love them both, because they are very different guitars.
Altough I absolutely love my ESP, it's short scale makes it a bit weird to play if you plan on down tuning a lot. I play in E so that's not a problem, but even in D standard, the strings are pretty slack already, even with bigger string gauge.
Every guitar is different, but in my experience, ESP's quality standards are pretty high, and I never played one of their guitar without wanting to buy it, lol.
If you plan to tune to B, my recommendation is that you get a baritone guitar, a 7-strings, or at the very least something that has a longer scale than the EC-II. Even if the guitar sounds great, it'll eventually piss you off. For the record, I bought mine for 900$ on ebay (plus around 250$ shipping/customs), so sometimes they go for relatively cheap.