I recently ordered a 25/31 PC+ for my brother and it arrived today. So, I've just spent the evening at his house, armed with AVIA and my SPL metre, to set it up for him. Being a PC Ultra owner, I was quite keen to get a listen anyway and see how it faired. First thing is the size. I thought the 25/31 looked really cute and a much better size for a living room. In fact, when I got home I looked at my PC Ultra and thought.."bloomin eck, its huge!!"... seriously I started having doubts about its place in my room, and thoughts about how I should perhaps have got the smaller one. Anyway, we tuned the PC+ to 20Hz with 1 port block and gave it a wirl. And I have to say, for what cost a silly £580 in total (don't you just love the weak $) I was blown away by its performance. I think the PC+ driver has a very slightly different tone, but the depth, clarity and power of the Ultra was nearly all there. I left thinking that SVS should build a 20/31 PC Ultra. Anyone worried about the size of the 20/39 should buy the 25/31 instead. It looks much better, and offers 90% of the performance. I'd like to do a side by side comparison at weekend, but for now I'm very impressed with the smaller unit.