I used them to book our trip for next year. I found them to be very competitive on price ... in fact they were cheaper by quite a margin and they've been very helpful when I changed things around a bit.
As they use an American booking supplier they were able to give me the US Disney confirmation number without any problems even though we've booked a UK package i.e free DDP and 14 day UK Ultimate tickets.
Finger crossed all goes well and the service levels are kept high till we go.