Hello all, I would like to solicit the expertise of this wonderful forum. I currently play through an Ampeg PF-500 and 1 or 2 Ampeg PF-115HE cabs. A lot of the time I am running the amp at 8 ohms, with one cab, and using it primarily for stage monitoring. The amp outputs 300 watts in that configuration. On occasion I need the full 500 watts and both cabs. I am going to buy a tube head, but am unsure of my wattage needs. I've never owned a tube bass head before, but have owned ones for guitar in the past. In my experience with guitar, having too much headroom with a tube amp isn't very desirable because you miss out on the character of the amp when you have to run it at lower levels. IE, micing a cranked 50w tube amp was preferable to using a 100w tube amp and keeping the level lower. I'm also a bit confused because my current amp pushes 300 watts at 8 ohms and 500 watts at 4 ohms, but the tube amps seem to push the same wattage regardless of the load? At least that's what I'm seeing advertised. I was considering a 225 watt amp, but think it will probably be overkill. What are your thoughts/experiences in this matter? Thanks in advance for your input!