well.. because we all have too much time I have an idea..

*I am joking*
we post our gear (like pres, mics and amps) and then you can ask: can you please record your amp with this mic an that preamp.. and then post a file??
what do you think?
Gearlist:
preamps: TASCAM M-3500, symetrix 202 pre
Mics: e604, md421 (old white), sm 57, sm57beta, sm58, sm58beta, akg eb 431eb, sennheiser e609
amps: Reussenzehn 2x 50watt stereopoweramp with EL34 on oneside, kt66 on the other, engl E620, Real tube II from valve works, protube from chandler... marshall JCM900 4500, JCM annyversary head
boxes: marshall 1960a, hughes & kettner 4x12 (dont know the type.. old one)
A/D-D/A is RME multiface II