Solid mATX AM2 Board Recommendations

[Kamakazie!]

All,
I am on the hunt for a reliable AM2 compatible mATX motherboard for my media PC.
It will replace the Gigabyte GA-MA78GM-S2H which I am currently using but having niggling issues with:
- S3 suspend having issues when waking up
- SB overheating and causing the system to auto-shutdown when watching Five OD or playing games. This is a known problem with this board (which weirdly has only been an issue for me since putting a 5770 card in & disabling the on-board graphics) and is unacceptable.


I have no preference for a manufacturer, but cheaper the better (will consider s/h as well) and MUST have optical spdif audio out, preferably with a good sound chip with DD Live / DTS Connect.

So any recommendations?

Thanks in advance.

 

[Kamakazie!]

Ah the northbridge then. Yeah, i only found out the problem after about 18 months of having the board when it first started going wrong. I've tried to remedy the situation by re-seating the heatsink & applying some thermal paste as well as putting an extra fan blowing right over it but it still gets too hot if the weather is good & i am gaming on it

It is a 4850e.

 

[Kamakazie!]

Anybody?

Any of these have known problems?

Asus M4A78L-M
Gigabyte GA-MA74GM-S2H
Asus M4A785D-M PRO