I would have agreed with Metaltastic a few years ago, I use to believe there was no substitute for real tubes and a miced up cab. Speaker sims just always sounded horrible in comparison! but since then, the technology has progressed by leaps and bounds, and I have to be honest, that I've heard lots of recordings done with modeling technology that I actually prefer to a lot of real tube rigs. Marco Sfogli used modelers on a few of his songs on his latest solo album and it was difficult to tell which ones he did with a real amp and which ones were with modeling. Killswitch's new album I just can't stand the guitar tone, and I'm sure they're using real rigs. I actually "prefer" the digital sound in some instances because compared to real rigs, digitally modeled tones seem cleaner, more polished and more perfect. Of course, this might not be the sound many are going for, they might want some hum in there are some ringy bell tone in the upper ranges. It's all subjective. But if time has taught me anything, it is to not count out technology. Amp and cab modeling technology will continue to improve. And for me, that's great! I would love not to have to buy all new tubes for my rig every year. UGH!