Thanks guys, a couple of weeks I can handle.
The thing that came with the 5200 has about ½" of padding that seems to compress itself into yer nether regions and just chafes you raw. The thickness of the padding makes the saddle height a bit of a guess too, I set it the same as my other one but ended up sitting too low.
I tracked down the saddle that was on the OCR... someone in the states is selling 'em on eBay (pity they have Giant OCR written over them)
That saddle was good fer 2 hours.
I'll talk to the lbs where I bought the bike... see if they have anything I can try fer a few days... also trying to borrow a mates Fizik Arione during the week.

I did read that saddle review matagi, very different looking piece of kit.