You might also want to check out some mods in the style you're after. In this case, somewhere like The Mod Archive is your friend. One track I found there with lots of electric guitar is Damask Rose by Quasian. You'll see that there are lots of guitar samples used, and that the filesize is pretty big as a result. :?
I may do that but I'm actually having quite good luck with taking wav recordings out of the Slayer 2 demo VSTi.
On file size, are there any file types other than wav supported that might give me a tad smaller result? True, I've already got a pretty good sized file and at the rate I'm going it's bound to get pretty big.
EDIT - Another question has popped up and I dug around a bit to no avail.
I read the wiki description of the sustain loop setting and it sounds useful to me. I however can't figure out how to utilize it or if it's what I need.
Can you use it to have a single sample that can play either 1 shot or looped and if so how?