Palmer's Pyre, many cocker pumps, Bushmaster Line SI, Sheridan PGP, tested Phantoms
Lapco Grey Ghost, 10 round feed tube (can purchase from Lapco), smaller stock (bought used on eBay).
Possibly the 10 round feed tube and shorter stock. Heard talk about a 12" Lapco barrel with smaller bore (.685), which would be good. Not sure if available yet.
Accuracy, looks, quality of build, uniqueness, pump stroke.
Barrel might be a bit long for some, stock a bit long.
This marker looks great. It has a sort of silver finish with a very slight purple hue. Just a fantastic looking marker. When I bring it to my local field, it gets lots of comments and many people ask to check it out.
Perhaps the best feeling pump marker I've ever held, at least for stock class. Very well balanced, light without feeling cheap, excellent grips.
This thing shoots darts with good paint and practice. I aim right down the top of the rails and can put the paint right where I want it to go. The pump stroke is smooth with just enough resistance. The co2 changer does take a few turns but it's fairly fast and has a tight feel.
It works. The Ghost has anti-double feed and anti-rollout detents (both Spyder, super easy to order and replace). With the exception of Palmer's wedgits, I've never been completely satisfied with barrel kits (still have rollouts occassionally, hassle to deal with), phantom detent rings, or home mods (tape, nail polish). The Ghost just works every time.
The only possible "upgrades" would be a shorter feed tube, a shorter stock, and a tighter bore barrel. I put upgrades in quotes because it's really just a preference. I prefer to be slightly closer to my marker when shooting, so I ordered a 10 round feed tube and picked up a silver stock that's about 2 inches shorter than the ghost. For me, it's more comfortable, but the original setup worked great as well. If you shorten the stock, you'll have to shorten the tube because it will hit your mask.
While the barrel is great (accurate, light), it has a .689 bore size. With paint getting smaller and smaller, I'd prefer a tighter bore. This would most likely increase air efficiency and might improve velocity consistency as well. I talked to Lapco and they said a smaller bore barrel (12") was coming, but I haven't checked back.
I highly recommend the Ghost if you're into stock class paintball.