phil,
i got them from kleenpro, america through ebay and worked a treat!
I hated the extracta wand a first as it seems to feel a bit awkward but now i think it's brilliant, you can actually see the dirt you're cleaning away. the brush scrubs and lifts the pile, and as it's closed in no overspray, and with the glides it's so much easier to use, i think it's just a case of trying it for a good while and getting used to it.
As for kleenpro, i think they're great, excellent customer service and the shipping's not too bad and often times iv'e had things delivered quicker from the states than from the UK, What's that all about
regards
steve