Re: Low watt amps for recording.
Although I like the tone of the Pro Jr and Blues Jr, I don't care for their background noise levels. A well-maintained vintage tube amp will sound at least as good and will run much more quietly at idle. For recording, you might consider any 5-15 watt vintage Fender, late-50's Gibson, or 1960's Ampeg. The new Bad Cat Mini looks really nice, too. A good condenser or dynamic mic will work, but you can't get the best sound out of either without a proper mic preamp. A lot of experienced recordists seem to think you need a very good mic pre when using something like the SM57. The FMR Audio RNP at under $500 does a great job with either type of mic. So far, I really like the BLUE Baby Bottle and SM57 for recording small amps. The ElectroVoice omni (PL5, 635?) works well, too.