Heya,
So you can choice between an PS3 Phat 60GB Edition (Preowned), and a factory new PS3 Slim 250GB.
I personally would go for the PS3 Phat 60 Edition (Preowned). I have one too, also Preowned. I upgraded the HDD though to 320GB.
You can play everything on it. PS1 PS2 PS3 CD, Super CD, DVD, DVD DL, Blu Ray, Blu Ray DL. (PS2 is only for the PS3 Phat 60GB Edition)
And the Phat PS3's indeed have a Other OS ability. Which is great for Linux, running Emulators from there, or ripping Blu Ray discs, etc.
Also a advantage is that this 60GB edition that if you upgrade the HDD, most info as Account will remain on the PS3. (Still recommend to do a backup for Save files etc.) Other Phat or Slim PS3's don't have that, I think. At least my friends 40GB didn't had that.
And the Phat does looks way better than the Slim, of course.
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The Slim PS3 250GB is a better option for you if you ONLY will use it for Blu Ray playing, not ripping blu ray's nor playing games.
Besides you don't have to buy a new HDD in anytime soon.
It doesn't play everything like the PS3 Phat 60GB Edition does. It doesn't play PS2 games.
Though for your bill it should be some better, also for the nature I guess.. Noise isn't that a difference.
The Slim PS3's indeed doesn't have a Other OS ability. So you can't rip Blu Ray's or playing Emulators etc.
Conclusion
If you want to be able to play everything and be able to backup/copy Blu ray's or run Emulators. And want a nice looking housing for that.
Pick the PS3 Phat 60GB edition (Preowned).
If you only want to use it for Blu Ray's and not ripping and neither Emulator abilities. And may time to time a PS3 game for the kids or visit. And don't mind about the housing as it might be hidden inside closet. (But it takes less space in height.)
Pick the PS3 Slim 250GB new from factory.
Adr990
Edit:
Hints and experience for the PS3 Phat 60GB Edition (Preowned)
I don't know what the state is of the PS3 Phat 60GB Edition (Preowned) they want to sell you, but they wouldn't sell it if it didn't work, as they are a shop, and still would give you a refund in at least 24 hours of exchange, right?
I got mine for 270 Euro without composite or compnent, but with HDMI cable. And 2 Controllers (one Sixaxis and one Dualshock3+Sixaxis) A charge stand for two controllers, and GT 5 Prolouge. And a PS2 game Crash Nitro Kart. And a Blu ray/DVD Remote.
Working well with everything. (The seller let me test before some stuff before I bought.)
Hint(s):
1. Buy a HDMI cable. If you got a TV supporting that. And don't pay over 10 dollar for it. (If you gotta pay more than 10 or 15 dollar, get on from Dealextreme or a other WebShop or Shop nearby.)
2. Clean your PS3 Fan Holes, USB ports and Disc glove with the rubber/plastic side of your vacuum cleaner. Than with a Q-pic. (Don't go inside the Disc glove with the Q-pic, just aside it.)
Than maybe with a cleaning cloth, clean the housing.
Experience:
Everything working well with mine PS3 Phat 60GB Edition (Preowned), (Upgraded HDD to 320GB), just some scratches on the housing of it. But that doesn't matter, and you barley can see them.
Follow a tutorial to install a Other OS. Install Ubuntu 9.04 Power PC. Not Yellow Dog.
That's pretty much about it. Good luck!