iPhone as music server remote control

Dshapiro turned me on to something like this. My understanding was you could buy a itouch {$299} from appla and install nettunes and use it as a remote. Are these other software programs better than nettunes? I have no experience.
I want to buy a mac mini and have a wireless remote controller to run itunes from my chair. What would be the smoothest way to do this?

Sidssp,
Your first link looks just what i am talking about. Has anyone seen the itouches? Boy, they are georgeous!

Would it matter which mac mini you bought if you were going to hook up external hard drives? I might pick one up cheap{ and no tax} on ebay. You don't need bluetooth or anything special to use the itouch do you?

Tbone,
The palm is definately not 1/2 as cool as the itouch. The itouch looks sooo much better than an old crappy palm pilot.

I geuss i'm a litlle confused. Say, if you want to play your playlists, you can't just grab your itouch and control itunes? You need a seperate keyboard monitor?

What is the itouch for then? Also, what else can you do with the itouch?

Thanks T-bone,
I appreciate your doing all the groundwork with the itouch. I will get one when i get back on my feet after this remodel!