Quatro and Quatro Pro, nice but fit isn’t quite as good as the XP. The new kids linked to in the first post aren’t yet in stock in the UK (few weeks away I believe).
When I found out the XP was being discontinued, I ordered a couple of spares… Only to find that when I came to need it, someone had sold the 2 spares I’d ordered through my shop! That’ll teach me not to just put things to one side, but to actually take them home… There’s a Petrol Blue one on eBay right now, brand new, £49.99 iirc. Tempted to buy it myself actually!