I had a look at the others in Jessops/Jacobs and the Flipside 400 was just huge, as was the Pro Runner 300AW.
The Flipside 200 would have *just* fit all my gear in, whereas the 300 has a bit of room to manoevre, plus I reckon that it'd be roomy enough to fit a book in the main compartment too.
The only annoying thing is that Jessops wouldn't let me do their 'Collect @ Store' thing - especially annoying as they had one in stock!
They had the black on in for £42 online (£70 in-store), plus one of my flickr/twitter chums gave me a voucher code for 20% off (bags&cases20, if you're in the market for a new camera bag), so once you factor shipping in, I got the black one for under £40.
Of course, now I keep clicking on the account section on the Jessops site, wondering when they'll actually dispatch it.
I love shopping.