"Saltlake58"I have the current generation (Gen 2) Marauder in .22. I like the gun. It accepts a scope nicely, Trigger isn't "Match Grade" but it has a nice pull and I've shot 10 shot groups that are around 3/4 inch at 25 yards and I'm not that good of a shot. It's more accurate than I am. It's long at around 40 inches, so you'll need a long case for it.
The .22 has a 10 shot magazine, I believe it's an 8 shot in .25.
I'd recommend the .22 for an initial purchase if that's the direction you decide to go. It shoots the Crosman Premier Domes well (Believe it or not, the Crosman Premier Hollow Points shoot very differently).
The air tanks and such don't normally care what gun you are using, so I have the Ninja 88 Cubic Inch "Buddy Bottle". The bottle, regulator, and valve and hoses are about $300 at Pyramyd Air.
If there's a dive shop or paintball place handy, please FORGET THE PUMP! I have the pump, and it takes about 100 strokes to pump up the gun from 1800 PSI to 2800 PSI. Above 2500 PSI, you must really put the weight into the stroke. I'm old and not that healthy (OK, not that old, but really 100 strokes takes a lot of effort)
Do check out the prices at Crosman using the code AGNATION for a 25% discount, and I believe someone mentioned free shipping on Friday's. That's about a $20 item.
If you want to wait for the regulated version, you may have a wait, as I suspect it'll be a hot seller. Be patient, and DON'T get one of the first off the assembly line. At least it's just an upgrade for an existing product, but when Crosman introduced the NitroPiston models a few years ago, the initial run was a disaster.