The TUBE purists are always gonna say that mic'ing up a TUBE amp is best....but, ya know what, for 'drect recording' the new line of modellers are getting very close to the real thing, and they are way more versatile and convenient.
I've been playing guitar for 33+ years, and for the last 4 years, or so, I've been using Line 6 (and Rocktron) modellers, for my home studio recording guitar tracks...mainly because of the "volume" issue, and "consistancy"....
Sure, recording DIRECT...one does lack that "speaker cone to MIC" AIR PUSH element....which gives that truly warm/smooth kinda vibe.....however, I have heard many tunes and mixes over the past couple of years, where it's becoming very difficult to tell the difference between a real amp or a modeller in a full MIX.
It's no good, simply basing your decision on a stand alone guitar tone.....it's the final result "within" a full MIX that truly counts.
Most 'real' TUBE amps sound raspy/fizzy/harsh on their own, without studio post EQ, and or a bunch of pedals stuck in front of them.
YES, today's modellers DO need some 'tweaking' in order to obtain GOOD tones, but so do tube amps.....
Here's a couple of very quick samples I did with the Line6 XTPRO rackmount modeller...., and a couple my brother Rod did also with the same unit.
http://www.nowhereradio.com/artists/album.php?aid=2136&alid=-1
Recently, a few of my friends and I have done blind JAM fest tests using the Line6 XT,
Vox Tone Lab &
Vetta II modellers......plus a real TUBE amp....and 95% of listeners (fellow guitarists) couldn't pick out which is which in a mix.
I agree, that in a perfect recording environment/setup...a tube amp, with the extra's will produce a better 'stand alone' TONE than a current modeller......however, whether or not, you will be able to notice the difference in a properly mixed & mastered TUNE, is another thing.
I seriously doubt it.
KEV
PS..Jeff Beck used
the Line6 POD 2.3 on his last CD.