1) ASUS P7P55D Pro at about £115
2) ASUS P7P55D-E at about £105.
I realise that the D-E version of the P55 board has a Pro equivalent, but this is around £135 so over my budget.
I also know that the -E version motherboards are slightly newer with additional USB 3.0 ports and two SATA 3.0 6GB/s slots. However, I'm not really fussed about the new 3.0 technology because I don't have anything at the moment that would use them.
From reviews, I can only make out that the P7P55D-E Pro (which is out of my price range) is slightly better than the P7P55D Pro, as it has a few better placed chips and slightly better technology - though I'm not sure if that means anything in terms of performance.
I will also say that I'm not really bothered about SLI or Crossfire, in fact I will probably avoid it as I'm conscious of power draw and heat, so it's not a factor for me. I have seen that there is a non Crossfire version that is the P7P55D-E LX, however it's only a few pounds less than the standard D-E, so I've not included this as an option.
What do you guys think is better? The Pro version of the previous iteration, or the standard version of the current one?