Darth Lefty 

The current Marz Z2 has an open bath damper with only one compression adjustment. In theory, this is a step down from cartridge dampers which have a volume compensating piston or bladder so the oil won't mix with air. It has a shim and needle type damper valve which gives a nice response (digressive, damping increases less with more shaft speed) but it can't be locked out. This also gives it a thematic link with the pre-Fox forks which were also open bath. It's probably a dead end for upgrades, but really good for the price

Rock Shox Motion Control on equivalent price forks is also an open bath with only one compression adjustment, but instead of shim and needle it has orifices with adjustable area. The feel isn't as good (linear, proportional to shaft speed) but it can be locked out, and the lockout has a blowoff. Older versions of MoCo had adjustable blowoff called Floodgate that let it act like a shim stack but now it's the middle option and no adjustments, all the nicer RS forks now have Charger cartridge dampers instead. RS "Gold" forks can't be upgraded to Charger, but Reba and Revelation and Yari can be upgraded to Sid and Pike and Lyrik Chargers.

Z2 also has a lot of cost saving things similar to the RS Gold forks, like plastic knobs, and thicker straight not butted stanchions made of less expensive alloy,

Probably too nerdy for this thread...