aquanauts.co.uk were the cheapest when i last looked (airgun cylinders menu)
Helen has a slow fill on her's, it's incredibly slow...i can't even blow dust off with it. I don't know if it's an MDE or not. I didn't get one on my last bottle. It's ok to use but takes ages to fill even a junior cylinder. When it goes for the hydro i'll see if the restrictor can be pulled out.
BFTA/NSRA County Coach
CSFTA Chairman/BFTA Rep