Here are a couple videos of how I pump now. The expansion i get is just as good as my BM but with much greater ease. No water. I lay back while I do this and relax.
Of course this has danger but I am extremely careful just as i am with my BM or and air pump. Highly recommend this to people...unless you are prone to accidents from not paying attention.
This is worth the money. it cost $500. the x30 & x40 Extreme BM models are $300 and $350. for only $150-$200 more you can get much greater ease of use and amazing PUMPS!!!! But of course everyone likes what they like. also if you live with parents (if you're over 18 move out...i used to live in my office when i was struggling to build my business.. slept on an air mattress...showered at the gym) or you have a family (wife & kids) it may not be as practical for you. it isn't silent lol and it takes up about a cubic foot of space.
The first video I just show it a describe it a little. The second video i show me using it