oh, and afaik, while the hardware design of the v-amp pro might use 10 year old technology (based on internal sampling rate), the algos etc are only 3 or 4 years old I think in the current version.
Maybe I'm wrong, I'm not an authority on this... but from talking with my peers I have the feeling that the only amp modelers that are considered to sound notably better than the v-amp pro are the current lineup from line 6 that came out over the past year or so, and even then their bass pod pro is still exactly the same thing that the bass v-amp pro copied in form and function, while the v-amp pro has behringer's own custom algos which truly do sound imho a little better at crunchy and just slightly overdriven tube sounds, at least from my tests in teh store that's what I came up with (I didn't use any presets, I don't even know how to use presets on the v-amp, I always custom tweak everything like it's a real amp).
the older line 6 modelers are always arguably better or worse than the v-amp pro stuff... I think they're better at heavy sounds while the v-amp stuff is better at clean and slightly crunchy sounds like real tube gear would do.
For me, tube emulation is more important by FAR.
and I suspect that's why the behringer ampeg sims are so amazingly good.