I personally record a clean DI track along with a mic'd amp. The DI is just if the origianal amped guitar doesnt work and if thats the case you can reamp by busing the Direct guitar signal out of a line output on your audio interface hardware to an amp and then mic the amp and record it to a new track and adjust the amp and or mic till you get the right sound.

A DI track is good becuase if you get a good performance you can always reamp and get a new sound that works.

Let all have a moment of personal praise for the DI guitar track...

I record my guitarsound directly, from a ENGL570's speaker simulation.

Of course having a dry DI track there as well will keep your options open.

On the other hand, and this is my opinion, this will postpone decisions you actually have to make earlier on. It seems like the style of producing is changed so much that people will postpone any decision they can until it is time to mixdown. That might seem creative. I have read a reply of Keith Richards when he was asked to comment on production methods: "It's not whether you have the option, but whether you can make the decision."

I always run a direct line for reamping. never no what you may need later down the line after vocals have been cut. I just reamped last night after cutting vocals with a new singer. Guitars were a little to crunch so we backed down the gain on the fatboy and had exactly what we needed. I always have a miced 4x12 cab in my studio so it is not that big of a time waster. I save time trying to polish a turn in mixing. :D

For many years, I have always plugged in a direct on the guitar while going to the amplifier. It gives you the ability to try or use different amplifiers no matter how good the original comes out from the amplifier.

I might also suggests the POD processors. Very nice and quite versatile. You can also find numerous different types of software plug-ins that will emulate the same thing. Have fun!