I finally decided to sell my AIContra combo with Contra extension cab because it just wasn't loud enough for a lot of our gigs (four-piece jump blues band). I grabbed a used Acme Low B2, and now I need a high-powered head to drive it. I'm looking at the AIFocus III; an EA iAmp800; or a LittleMark II. I use a 1949 Swingmaster with Realist p/u, and a P on a couple of tunes. Any thoughts on these heads, or something else with this cabinet? Thanks!