Never gone online with either machine, so cant answer about that side of things.
With regards to the BluRay 360, it has been rumoured for a while now and, while it may very well happen, Microsoft havent confirmed anything.
If you hold off for a 360 with BluRay drive, you might be waiting a while - end of the year at the very earliest, i'd say.
If i were you, i'd try and get a decent one off eBay for cheap, then upgrade later on if you really want to.
You'll have to remember, though, that even though the PS3 has a BluRay drive, it is not as quick at loading games as the 360.
A big problem PS3 users are finiding is that, especially with newer games, you have to pretty much install most of the game on the HD, to cut down on load times - which can take up to 20 mins or more before you even play the game.
The BluRay drive does not work as fast as a DVD drive, which is why the bulk of a game is installed.
If you have the same game on a 360 and PS3, the 360 will load a lot quicker.
Plus, going from what a friend of mine says (who has both machines), the XBox 360 is a far better machine.
Do the eBay thing, i say.....