You can get some very good tones using these pedals, you just got to tweak away until it sounds good in the headphones/monitors, you can also take a DI track at the same time to use for Guitar Rig. You may want to be careful with time based effects like delay and reverb you can add these later to better match other tracks unless its all guitar. You said that your computer can't handle multiple VST guitar tracks but you should be able to either freeze some of the trtacks or record them so you are only tweaking and using the cpu for one at a time. I personally just can't get this system, virtual or ampless pedals to "feel" like the real thing but then I am a dinosaur fossil anyway.

It's no good if you like to rely on feedback effects. Especially when you walk up to your guitar to the speaker cabinet. You just don't get that with emulators. Sometimes emulators can be used simultaneously with guitar amplifiers and then that feedback is recorded and then also emulated differently. So do it both ways.

Mx. Remy Ann David

Thanks for the feedback, pun intended. I don't do much feedback and certainly not enough for anything to be considered a deal breaker. With freezing tracks I feel like it's difficult because you've got to hear every track together with the effects on to mix properly and that won't fly with my CPU. I'll try more with the pedal, still trying to get a good recorded sound. Less is more with distortion obviously. It'd be nice if I could think of some artists whose guitar sounds I'd like to emulate on record but can't think of too many.

What's your system? If you're running a 64-bit OS, you can crank up the RAM to get more power.
I run 32-bit Vista w/ 4GB RAM (really less), and don't have too much trouble unless I really start piling on the tracks and plug-ins.

W/ 64-bit, you can run a lot more RAM.

I'm running 64 bit Vista 4GB RAM. Are you saying there's a way to better relocate it temporarily?