Best place to buy cylinders?

I plan on buying a digital pump soon and was wondering what are the best sites to buy good quality cylinders from are that are not overly expensive ? And this might sound like a dumb question but are cylinders universal? Like if I buy one from say thickwall will it work with any other pump?

I would recommend a 9” rimless straightwall cylinder for $70 including shipping from here:

Determine your cylinder diameter here: Selecting Your Cylinder Size

All professional quality cylinders come with universal quick disconnect fittings and that includes Thickwall.

Which digital pump are you looking at?

I have bought 3 cylinders from happystim they are of decent quality and are slightly tapered. The cylinders there are $39.95 and the pump was $39.75. They came in a discrete box and delivery was very fast. They also sent me a tracking # to track the shipment which was great.

Thank you for all the replies. I will look into both of those places

Gprent I came into some money and found a very good deal on ctc DP4000 and thinking ill take the plunge on it I from all the good reviews I been using a bathmate for over a year as my other source of pumping and can’t stress how dissatisfied I am with the company and product.

Try vacutech. More expensive but great cylinders.

Why are you recommending a rimless cylinder when rimmed cylinders are so much more comfortable?