Used them about 6 timers in last 3 years.
Gotta disagree with Shandy, they are definitley the budget end of the market, however, you get great value for money.
I take it for £200 you are going for a coach package? I think they now do two destinations via coach, 3 Valleys and Chamonix.
Personally have only done 3 Valleys on the coach. The accomodation they use is in Brides Les Bains, a spar town down the mountain. The town is absolutely dead at night. You have to catch the Olympic gondola up to Meribel, this is a half hour jouney, realistically you will not be skiing until 09:45, at the end of the day the last Gondola down is 5pm. The hotel they use 'Club Versau' is I believ owned by ski weekends, probably rates 2 stars and the food is rather basic.
One problem I have heard of though have been lcuky not to experience is if the coach gets stuck in London traffic and misses the Chunnel slot you may not get to resort until midday as opposed to the breakfast time arrival in the brochure.
All that said the weekends offer excellent value for money for minimal time off work (presuming you are London based)