Re: I need help buying an amp
Look for a used Trace Elliot SpeedTwin H100 (or H50 if 50W will do), preferably pre-Gibson but Gibson era is fine too. Great sounding clean channel, nice JCM medium gain, and the high gain is over the top, I have the pre on mine set at about 11:00 and it's plenty. Tone wise, the high gain is Soldano/Bogner territory, definitely more Marshall than Mesa. You can swap the EL34s for 6L6s if that's your thing though.
I keep toying with selling mine and getting a 50W JCM or JMP head, MV or non-MV, and going back to the simpler life, (anyone want to tempt me on this

) but this head really sounds killer. They can be had for very reasonable prices if you can find them, not bad for an amp that originally sold for over $2K.
50W will be more than enogh for most jams and GIGS. The difference between a 50W and 100W in volume is less than 10 Decibals.
50W is plenty, the difference is only 3dB which falls into the "barely perceptible to the human ear" range. But 100W'rs do have more headroom, which can be a good or bad thing, it's good for clean sounds, but the overdrive sounds can be a little sweeter on a 50W because it's working harder.