I will agree with you that the compression fittings are really nice looking. They do have clearance issues though when used on some components (D-Tek Fuzion for example) so the next best IMO is 7/16 tubing on 1/2 barbs. Very tight fit. I actually ran my loop like that for about 10 months...
Use the stock thermal pads. TIM is too risky around vrm's and if your board bows at all (which it probably will just a little when you mount your CPU cooler,) the heatsink will loose contact with the VRM.
The northbridge and voltage vrm sinks are actually separate pieces. The silver finned array is connected to the northbridge via heatpipe but it is only sitting above the VRM heatsink. They are not connected.
On the southbridge, I take a bic pen and take it apart. Use the end of the bottom...
Personally I would stick with ceramique. you MAY see 1c difference going to as5 over ceramique.
Best way to apply though would be a small blob in the center. I would put a blob, mount and then remove and check your coverage, clean and adjust the blob size for more/less coverage and remount.
Yeah, and I really want to volt mod this thing but I just can't afford to screw it up. It's on water and when loaded only hits 41c. The memory OC made a huge difference though.
I'm not sure how much heat the ram and vrm's create. I'm running a set of these to cool my ram and vrm. I understand that chilledpc will be getting some soon and Petras should have them back in stock early next week. I have no temp issues with these on and have very little airflow over them.