Alias Intimidator - Don't see much of a difference, except for miling
Dye DM5 - Heavier, pretty nice gun, I like my 2k5 better though
EGO - Only gun that I like better, but I still love my 2k5 and am glad I got it
Ion - Had much more problems with and it wasn't as fast
E-Bladed Black Magic - Slower, heavier, harder to maintain
Viewloader eVLution II (Egg)
Air America 4500 PSI Tank
Check-It Unimount 2
DOW 55 - This is the factory-recommended 'grease' you use to lube your marker... does a great job, and you'll be happy you got it when your gun lasts longer because you remember to clean it :]
ASA, I recommend either the Check-It Unimount 2, or a CP one.. both work great
Fast Hopper, I recommend a Halo B or Empire Reloader B, but if you want to save some money, go with an Egg
Paint... lots and lots of paint, you're going to need it for when you start mowin faces with this beast
New trigger -- stock one is fine, but if you want a little bit more walk-ability, get a new one
Barrel -- stock one is also great, but you might want to go with a new one.
Feedneck -- I personally don't like the stock one, but CP Clamping Feednecks are great and easy to use.
Not an Air Hog
easy to use & maintain
None, except for all the paint you're going to use.. and the manual sucks :(
I got my 2K5 Intimidator for $650 on ActionVillage, and I haven't regretted it at all. I've always wanted an intimidator, and I had finally gotten one. When I got the box, I was super excited. The barrel is 12" and very accurate, and the stock trigger aint half bad either. It came with some nice-feeling grips as well. The milling is the classic, super-sexy 2k2 milling, meaning it's hard to think it looks ugly :). The only thing I didn't like was the fact that the manual was the old 2k2 manual, and had alot of stuff that didn't have anything to do with the gun. But oh well, it came with some corrections on a separate sheet of paper, so its all good.
After running to the local shop and getting some DOW-55, an ASA and Macroline for it, I gassed it up, put on my hopper and went outside to test the bad boy out. I ran 200 rounds though it and was amazed. This thing was shooting at around a 10 +/- FPS (and lately it's been going to around 6-9 +/- FPS), and was very accurate as well. Easily one of the most accurate stock-barrels I've used (aside from cockers, of course). The gun also ripped like crazy, I was easily shooting at around 18-20 BPS which made me feel awesome.
After the first "test drive", I tweaked the settings a bit and then put another 500 rounds through it. The gun didn't chop at all, and I didn't experience any drop-off. The gun was shooting like a dream. I put around 2000 rounds through it until I stopped. Yay! The first cleaning session!! Yippee!!!!
Usually for me, the first time I clean a new marker is the hardest and worst, but it gradually gets easier.. but to my surprise, the 2k5 was actually incredibly easy to clean. All you really need it DOW-55 and an Allan wrench or two. The bolt was very easy to get out, and after lubing it with some DOW-55, I went on to the ram, the poppet, the reg, etc... it didn't take long to clean and it was easy to clean, a big plus in my book.
The only problem I had with my 2k5 was with some major drop-off, but that was because either my tank didn't fit my ASA, or I failed to fully gas it up, when, after talking to my friend who's a gun tech, was just a kind of funny thing to look back at. But aside from that, I haven't had any problems with it.
Just recently we had team-practice, and the timmy worked flawlessly the entire day. It was mowing faces all day long, and was working incredibly well. After wards, we decided to go play some rec-ball for fun, and the marker worked just as well as it did in speedball -- you can easily 1-ball people with it, and it completely owned on any field that we played on.
This marker is an incredibly good one, it's very fast, light-weight, easy to use and maintain, and very accurate. Most people think that its not as good as Alias Intimidators, but they are completely full of it, and it is just as good. The gun is worth EVERY PENNY that you pay for it, and you can find some really good deals on them. In short-- this gun is a beast.