AC re-gas. It was completely dry. Garage said the pump and seals seemed in excellent condition and the partial gas+UV fluid they put in last week was the same amount measured today so no slow leaks to note either.
Glad my mtec ones weren't a Friday build then haha!
The Alca ones I've always bought after trying others in between are these:
http://www.ebay.co.uk/itm/110889729693?_trksid=p2060778.m2749.l2649&ssPageName=STRK:MEBIDX:IT
As you can see they're much flatter than the usual "flat" aero type blades. The centre bit where the arm goes into does come out a bit so there is an obvious gap between blade and arm when attached.
One thing to note is that they do lift a bit at very high speeds but at motorway legal speeds they're just fine and the wipe is clean from end to end
For a cheaper alternative it might be worth going into your nearest Tesco superstore. They have a new range of flat blades at something silly like £8. I tried a pair last year and they seemed really good too but foolishly broke off one of the end plastic clips while washing the car one day and never bothered to get another set.