I've actually tried both (OV and organic terry), and I prefer the terry! I've gotten both from the States. Believe it or not, the terry dipes I have have actually stayed softer than the velour (or at least as soft)... velour never seems to live up to its early promise. They're a little bulkier, but consequently a little more absorbent, and they're more generously cut, so they fit waaaaay longer. I had a medium in each style, and I had to stop using the OV one on dd about 6 weeks ago but she still fits into the terry, and not even on the last set of snaps. Her large OV nappies are already looking pretty snug (she's 9 months), but there's a huuuuge amount of room in the terries, so I'm sure they'll last her til potty training.
I'll have a blue medium organic terry to sell in the not too distant future, if anyone's tempted now.
I think they're lovely!