[chumbucket]

Penn sold so many reels over the years, there will probably never be a shortage of them. There are a certain few models that are somewhat rare and coveted when someone can get their hands on one.
Two reels that were discontinued that really pissed people off are the Penn Squidder (140 and several variants of it) and the Penn Z series Spinfisher reels such as the 704z, 706z.
The Z series Spinning reels are favored among surfcasters for being able to take a lot of abuse when exposed to dunking in the salt as well as sand, rocks, etc. Most of the time, they only required minor maintenance like flushing with fresh water, oil, and lube and you're good to go. very simple to work on too and parts were easy to come by.
The Penn Squidder enjoyed one of the longest production runs with very few changes other than spool material, handle changes and a few other variants lie a narrow frame model. Otherwise unchanged from the '30's up until about a year ago. Again, although many people shy away from working on conventional reels, I found them very easy to tear down and maintain. Old technology that still performs like a workhorse. One of MJ's favorite reels. I recently passed on to him a narrow frame model that I reconditioned. The narrow frame models are harder to come by. The narrow frames are nice because the weight of the reel is centered above the rod, whereas the standard wide frame has a tendency to roll to the side giving your wrists a workout. We all know that MJ is a fragile delicate flower and his wrists can't handle it. You would think they could with all the porn surfing he does, I'm sure they get a good workout. ;) ;D

So, I guess that's more information than you ever wanted to know about fishing reels. Eh hammer? ;D
You did ask though. ;D