My local Johnstone has the 550 with the single temp clamp on sale for $235 plus a $50 mail in rebate.
I was gonna get the SMAN3 but I figure I'd wait till the SMAN 4 comes out and then wait a little longer for any kinks to be worked out. I don't have much of a tool budget these days but I do need at least one more manifold and soon. This would be my first digital set up. What say you all?