I have a great rig currently. Mesa 400+ and an Ampeg 610. The problem is that I'm not playing loud rock anymore - this rig is overkill. In fact - I haven't played with the Ampeg 610 in probably 2 years. I have been using the 400+ with an Avatar 12 cabinet. One problem is that the 610 has terrible feedback when I play my upright unless I can get far away from it. That's not always a given in small rooms. I have been toying with the idea of trading the 400+ and the Ampeg 610 for a Walkabout Scout combo. My only concern is that I won't have enough power in the even that I start playing in loud situations again. So I was hoping ot get some thoughts from people on this. I am also wondering - if i decide to get the scout - it is available as either 4 or 8 ohms. I currently have a 4 0hm Avatar that I would hold on to for situations where I need an extra speaker. So - which model should i get for optimum power at all times?