I've been for the longest time thinking about getting a mini for a htpc but have a friend who has a ps3 he downloads movies to and loves it. any thoughts on using a ps3 for a htpc. i already have a computer that i could use for everyday stuff. any input would be greatly appreciated.
Since you indicated that you want one for HTPC purposes then you need to decide on what exactly do you want to play.
Blu Ray discs
DVD discs
media files
music
PS3 plays blu ray discs, dvd discs and does it very well. When it comes to files you have some very clear limitations. Files local to the PS3 can have size limitations and if you stream movies, PS3 definitely wont play m2ts files that are VC-1 encoded.
Mac Mini with software such as Plex can play a larger variety of files including the m2ts vc-1 files whether they are local or streamed in. The draw back is no blu ray unless you buy an external one and archive your movies to a drive. Much of the archiving process requires Windows and at least softwares such as - AnyDVD HD ($), TSMuxer (free), Eac3to (free).
I own a PS3, and archive my files onto a NAS and stream. My VC-1 encoded blu ray discs while archived, I have to resort to the original discs. I don't buy into converting them as they lose quality. The PS3 playing discs can however play the various HD audio if hooked up to a reciever. Plex as example may handle only DTS and Dolby 5.1 etc.
I'll eventually get either a Mac Mini 2.26 and add ram and a faster drive. As pointed out it can start adding up in cost. The alternative is building a speedy little htpc and using XMBC with Linux which can exploit the GPU.
I recommend you take a look at both the XMBC forums and the Plex forums.
As well, PowerDVD and all that stuff is a real PITA for playback.
Good luck
- Phrehdd