need advice: keep 60GB or get slim PS3

[Kyo28]

I currently own a Japanese 60GB PS3 (with full PS2 BC, Emotion Engine included) and I'm considering to sell it to get a Japanese slim PS3. I wanted to hear your opinion on the matter. Here are some points regarding my use of my PS3:

• I use my PS3 on a daily basis, 70% for watching blu-rays, 30% for gaming
• I don't install Linux or another OS
• I plan to buy a Onkyo amp to get surround and connect it to the PS3
• fan noise is a very important factor for me, because I don't want it to bother me during quiet scenes when watching blu's
• I don't play PS2 games at all anymore and don't plan to play them in the future. I'm selling them all off
• USB ports: I now have 4 but at most I've only used 2 at once. I use them to connect external storage, connect the PS Eye from time to time and charge my controller

I think those are the main points to consider. If I can get a decent amount for my 60Gb, I could use the extra money to buy more Blu's and games or even get a second slim PS3, to be able to play region B Blu-rays and have a back-up system.

So, any suggestions on the matter? Things I might have overlooked? I'm mostly interested to hear feedback on the noise of the fan on the slim models, especially from people who have owned or own both a slim and fat PS3, to compare.

Thanks in advance for the feedback!