I went with the expensive prescribed version, because the insurance paid for it, it was shipped without having to stand in a store, and I was far over all my deductible and co-pays. It was theoretically out of network, but because my ins. has a pharmacy associated, and they should have provided it, but did not, it was allowed as in network.
The Uro did not sell them directly, just wrote the prescription. They did have a nurse who worked for the provider who comes in at intervals and will talk throgh the process. I settled for reading the instructions.
Can't say if it is better than the cheaper versions, but I never needed one before, so its all new to me. It works.
I did have to pay shipping & handling -