Quick question, please read/help

[dcdrica]

I messed up the the laser on my PSX 100x trying to adjust it to read all my backups. I have the Game Enhancer//External Mod and I know the New PSX's that come with the Dual Shock controller don't have that Port on the back. I plan on either going to a Pawn shop or funco-land and buy a used one. My question:

A. Should I take a chance on a used one, and if so what model should I try to get so that I won't have laser reading problems like before?

B. Stuff the Game Enhancer/External Mod get a new one and find a place to put one inside my PSX?

If B. Can someone tell me a place where I can send it and they do it?

P.S. I'm located in the US (Richmond, VA)

Thanks in advance