Sky was supposedly broadcasting the darts in hi def last night.
Non hi-def types can cost up to $4,000, making them relatively affordable for their size.
If you forgo the need for a desktop, that's OK; many laptops have the capabilities to hook up to a HDTV with a hi-def cord or-at the very least-a standard monitor cable.
One of the main differences is the PS3 uses Blu-ray discs for games, which gives them the ability for larger games and phenomenal Hi-Def gaming.
If you can, I'd recommend playing on a Hi-Def television because other traffic and obstacles were easier to see than on a standard analog TV.