Well, I have decided to review each one, and then give a winner in the end.
2k4
Bear Pajamas: Defiantly seen more than the monkey Pajamas. It is also an item that many people use for cosplays, and just to look cool. Ultimately one of the better items.
Monkey Pajamas: Although not many people use it, it doesn't mean it is a bad item ( who am I to judge? After all, I haven't made a monthly Collectible yet), but in my views, it is rather bland, as well as unnecessary. With the newer items out, a grey footsie pajama with a monkey hat costume seems boring.
2k5
Angelic Guitar: Ah, the famed Angelic Guitar. although it lacks many poses, having only the wield guitar, some neck thing, and a guitar on back, it still exceeds the awesomeness of some other MC's, and is a great gift to have, be it that someone does have it.
Demonic Guitar: The Polar opposite twin of the Angelic Guitar. Although it has the same amount of poses, and possesses two thirds of the types of poses the "AG" possesses, it does have one difference. While the AG has a neck thing, the "DG" has an evil, demonic arm. Although the arm is movable, automatically bringing people towards it, I find that the arm gets very annoying after a time and that the neck thing is overall a cooler item.
2k6
Angelic Bow: I was disappointed with the bow. It lacked things to do with it, besides wielding it, and placing it on your back, to look like you had wings. I do however give it sympathy, as I know that this was still when things were coming together ( should of mentioned that about the other items, but I enjoy them a lot)
Chain of Command: It looks awesome! unfortunately, when I bought it, that awesomeness turned into something else, annoyance. The chain was too think, and the main form covered a huge part of your body, making me use it only to add to a previous avatar, where I put a sash about my self, to block the blockiness of the chain. The other poses also looked great, but once I bought them, I realized they were just big pixel objects, and are really not that great. Strangely though, I enjoy it more than the bow, so although I gave much more hate on the chain, it is overall, the better item.
2k7
Yokai's Treasure: This MC was just screaming for cosplays, which is fine, but now it is only used for a few items that are within its large assortment of items. Not only is it with variety, it is also with the multiply relatable items, making it a favorite of mine.
Demonic anklets: Unfortunately, the Treasure can not compare to the Anklets. The anklets have grown into a classic, and why shouldn't they, with their different types, and assortment of appearances, this is one of the key items to a player dressing demonic.
2k8
Oculus Mythica: A nice item, especially for those who don't enjoy their default avatar eyes. It ranges to all types of eyes, and it is nearly impossible to for a user to not find one he likes in it (unless he or she is liking the Magica)
Elemental Wings: These I give a meh. Sure, they were nice, sure they had many different types as well, but from my stand on the issue, none of the wings ever worked phenomenally on me, so I try to keep from them, although singularly, they are beautiful.
2k9
Pride of Hera: This item is not the best, nor will it ever be the best. It is what looks like to me, just a non thought out collectible, to draw more people into the other god items ( warmth of apollo for example) Not worth my time.
Lightening Lash: This item is to me, something you would give to a player who just began playing. It's cheap, and looks cool until they realize it isn't really that great.
2k9
Lunar Sash: I like it. A lot. The color really is nice, the poses are fine, and overall, I would say this is a great MC!
Bani The Bunny: Other than the fact that one of the poses for the bani looks like it's trying to hump your leg, I would say it is relatively okay ( but I don't see the need for it to be so expensive in the MP). The other bits of it are okay, but I feel that it was rushed, or just neglected (perhaps to make the Sash even better).
Those were my views, now for my choices:
1. Demonic Anklets
2. Lunar Sash
3. Angelic Guitar
4. Demonic Guitar
5. Bear Pajamas
6. Oculus Mithica
7. Chain of Command
8. Yokai's Treasure
9. Elemental Wings
10. Monkey Pajamas
11. Lightning Lash
12. Bani the Bunny
13. Angelic Bow
14. Pride of Hera