Recording Guitar

How do you guys go about recording your guitar?

I currently Have a condenser mic for recording acoustic, however my new acoustic does have the pickup built in so should I consider switching to that and go straight into the audio interface?

With electric guitar I have not done any recording with my new setup but I have a Shure SM57 sat in front of my amp right now waiting for the moment. However I am reading that quite a lot of people are not favoring amp simulator plugins within their recording package over this method.

what experience does anyone have on this subject?