Off topic: How the hell did you get tombstones as part of your user name?
Edit: Woops I read over that rather quickly. I thought you were giving us possible options. Well since the only consoles your missing is PS3 or Wii, and you want something cheap, the Wii is the only option you have. BUt if you have a flash card for your ds, may I suggest an EZ flash 3 in 1? It lets you play most gba games and will keep busy until you can save money for your wii, wii games, or if you really want to get a ps3.
The "Tombstones" are standard ASCII characters. You just type them in ?. He also already said he had a DS.
Since you're limiting yourself to cheap consoles, you're kind of pigeonholing yourself to the Wii ($25), since the PS3 costs $400 still. I guess you could go with the PS2, because it's got a large collection of games and is relatively inexpensive. However, it would be a big downgrade from the 360.
Well if the 360 isn't that fun, much of the same is on the PS3 or I'd list it as a choice, but given you have the DS and PSP you're left with the Wii which I'd recommend the most regardless as it's not like the 360 like PS3 is.
I don't know if you own a PS2, but I would still say it is one of the greatest systems of all time. Hundreds of great games throughout just about every genre imaginable. And yes, games are usually very cheap. For 100$ you could get a plethora of used games that would make you very happy.
Wii might be good for you too. But not exactly for Wii games, but for Gamecube games. If you haven't played gamecube before, you can pick up most of the killer apps for it somewhat cheap. Anyway, you said cheap, and fun, so these 2 systems come to mind.
If your dissapointed in a 360 (which I cant understand why) Then a PS3 is out of the question, as for the Wii, once you beat the >15 good games for it. Then it will just sit there Im sure. I'd go with a PS2 personally. or you could buy good 360 games.
^It's easy to be disappointed by the 360, don't be so short sighted. The 360 has an issue the original system had, it primarily caters to a narrow width of tastes in genre. If you're not heavily into FPS, sports, racing, and fighting games in general things are slim pickings in comparison. Also if you don't want to be an online player (majority of people still aren't which is fact) then you have no fun out of that either and it leaves you with not much to do if you're sharing funds between more than one system as is.
As suggested above, get a PS2, and like Sstew, you don't really have a wide range of GOOD and PROPER games for the Wii, well that's my opinion, but yeah you should get a PS2, a load of good games, starting with DBZ Budoki Tenkichi 3, and DBZ infinite world