Blu-ray, The hard drive can be swapped, good online store, awesome comfortable controller, wireless connection already installed, don't have to pay for the online service, a good catalog of games which is still growing and getting better, if you can find an older one, it will be backwards compatible, but if you get a slim then I think it can only play PS1 games, since they're on CD and not DVD.
I have one of the last 80gb backwards compatible models, and I have no problems with it what-so-ever. So I can't really list any cons for you.
I have one of the last 80gb backwards compatible models, and I have no problems with it what-so-ever. So I can't really list any cons for you.