What's the best prostate massager for beginners?

We're new to P-spot play so could use some suggestions.

Are the vibrating ones more effective?

I'm interested in this too.. especially input from men, I'm thinking of getting my boyfriend a present haha!

I know he likes vibrations cause he likes to appropriate my toys, but i think something more specialised would be better.

I would say something like these;

http://www.lovehoney.co.uk/product.cfm?p=2548

http://www.lovehoney.co.uk/product.cfm?p=4232

http://www.lovehoney.co.uk/product.cfm?p=12282

Basically, the man would need to contract/clench his arse muscles, in doing so, it gets these little beauties working! They are slim, so great for beginner.

For vibrations, you can't goo wrong with the nexus trio or rocks off;

http://www.lovehoney.co.uk/product.cfm?p=14762