Upgrading cartridge used or new?


I am in process to upgrade my analog setup starting from replacing my DV 10x5 with an step up one from DV or other make.
My TT rega P5.

On my journey I had hear mixed things about buying used, a much better cartridge or just pay same amount for a brand new lower end one.

Some dealers said you never know the history of a used cartridge, so you must believe the always magic # from the seller of 100 hours on it, plus vinyls condition that was expose to, etc.

While the new even if lower end is a solid secure step.

I would like to hear your exp about buying cartridges on used market.

As always must appreciate all your time to share your comments.

Regards.
128x128mountainsong
With my addiction out for all to see, I only can find 43, but I refuse to look in any more drawers.;)
because most dealers have no idea about vinyl or anything to do with it, and are afraid of cartridges because of the same biases we see here. So, good for me. I will continue to buy and listen to great used cartridges cheap.

By the way, most of my purchases are also 20 to 30 year old LOMC.
01-14-13: Manitunc
By the way, most of my purchases are also 20 to 30 year old LOMC.

Do you have them re-built when you buy them Manitunc? I would think that most cartridges suspension would be shot after 20 or 30 years, even if the needle itself is in good condition.