Hey I was wondering what the good sites are for buying a good pump. I just read an article that recommends you get one with a vacuum limiter, which automatically lets in air if too much negative pressure builds up in the tube. I would also like one that you can use in the bath or shower, not the bathmate I've heard bad things. Anyways I know many recommend vacutech, do they have a vacuum limiter? Anyone not recommened pumping?