Epiphone Les Paul 100
Ibanez Jump Start
Fender Acoustic
Ibanez Tone Blaster 100 Head
Hartke 412 Cab
Boss Chromatic Tuner Pedal
Boss Noise Suppressor
Ibanez Weaping Demon

There are many factors which affect the loudness of an amp. To play with a band in a medium sized gig (eg. At School) I would recommend 30 watts or more.

Don't just buy the cheapest amp just cos it's 100 watts. Don't buy the Line 6 spider, or the marshall MG.
ok what about 50w... and i will be at school.... and maybe sooner are later at parties....
100w tube amp is hearing damage
"Guitarmen, wake up and pluck wire for sound, let 'em hear you play"
-Charlie Christian
"You have to give people something to dream on"
-Jimi Hendrix
"I try to make any guitar do what I want it to do"
Quote by ericgentz
100w tube amp is hearing damage

Haha mines 120W, I never really truly crank it full cause it would kill me, but thats why I love the JSX, its amazing when its quiet aswell.

Anyways, if youre looking for sufficient volume tube wise, 30W should do it. If youre going solid state, then 50W should be good, you may not even need all 50W, but headroom on a Solid State = good.
Epiphone Goth Les Paul Studio
Ibanez SA120
Peavey Raptor EXP
Takamine Electric Acoustic
Boss CS-3
Boss DD-6
Boss TU-2
Boss MT-2 (For use with my Vox)
MXR M-108 10-Band Eq
Dunlop Crybaby Wah
Peavey JSX Head
Vox AD50VT
A 30 watt valve amp.

And almost any amp can give you hearing damage if you keep your head next to the speaker for ages....
"Breathe, breathe in the air
Don't be afraid to care"

Fender Strat/Tokai LS80>few pedals>Orange Rocker 30