I have an A64 3200+ platform on the way which I'll be putting into an Antec Aria miniATX case. Since I ordered an OEM Athlon64 I'm also looking for a robust cooler that'll be both small enough to fit into the case and reasonably quiet (<30db). Unfortunatly my SLK-900a won't fit on a socket 754. 
For those of you with an Antec Aria, which coolers did you use? How much clearance do we have in there? Do I specifically need a low profile cooler (eg, absolutely no overclocking) or is there room for slightly bigger ones (just a little bit of overclocking). The first constraint is size because, well, if I can't fit it into the case it doesn't do me much good now does it?
The second constraint is that I want it to be the best cooling for the quietness I'm looking for. The last is cost. I don't really have a cost constraint, actually.
I've been looking at:
Cooler Master ACC-U72
Zalman CNPS7000A-Cu
For those of you with an Antec Aria, which coolers did you use? How much clearance do we have in there? Do I specifically need a low profile cooler (eg, absolutely no overclocking) or is there room for slightly bigger ones (just a little bit of overclocking). The first constraint is size because, well, if I can't fit it into the case it doesn't do me much good now does it?
I've been looking at:
Cooler Master ACC-U72
Zalman CNPS7000A-Cu