I don't know how insightful this is but I've got to defend the PS3. Yes, the updating is ridiculous. Nobody mentioned the garbage web browser either. It tries, but it fails miserably.
Having said that there are some great things about the PS3 that I think put it ahead of the Xbox. First and foremost, the exclusives. Uncharted 2 is arguably the single best game of this generation. God Of War, Demon's Souls, Heavy Rain, Ratchet & Clank, Metal Gear Solid, Little Big Planet, Killzone, Resistance, and Infamous are just some of the exclusive games already available.
You should also look ahead to next year at the exclusives. What is coming up for Xbox? Gears of War 3 is all that immediately comes to mind.
The PS3 on the other hand will have LBP2, Killzone 3, Infamous 2, Resistance 3, The Last Guardian, Twisted Metal, Motorstorm and more.
Aside from the variety of games there are other benefits to the PS3 over the Xbox. There's free online play while Xbox Live not only costs $50 currently but is only going up in price. PS3 also has Blu Ray and a non proprietary, easily upgradeable hard drive which allows you to store video/music/photo files.
Also to me the built in batteries of the PS3 controller are much better than removable batteries. There is a $30 Energizer charging station
you can buy which eliminates the need for the USB cables and it works flawlessly. I very highly recommend getting it. There is also one available
for Xbox controllers though I haven't tried that.
Anyway, I own an Xbox also and will agree on a few points: There are exceptions, but yes the 360 in general gets the better multi platform versions of games. Also while you pay for Live, it is a better overall experience than PSN. If you are a shooter or sports game fan and like to play with friends online often, the Xbox is a better deal quality wise.
Lastly, we can all agree that the Wii sucks.