Can you recommend an inexpensive one that allows me to use the Vacextender headpiece please?
Since I have no idea about using extenders, I was told I should look for ones with springs. Is that important?
The proextender sold on aliexpress is compatible with the Vacextender headpiece.
I would normally recommend a newbie start with a spring based extender so he can gradually increase the tension as he conditions up. Once you are experienced at extending and get a better idea of your penis under load a non spring based one has benefits such as trying out stress relaxation .