I'm still stuck using the stock HSF that came with my 2500k, and I've been driving myself insane trying to figure out which cooler I should buy for it. I will love Antec forever if they could alleviate my stock HSF pains.
I'm looking to build a new rig to replace my personal 5-year-old PC (build my wife a new one and an HTPC since then) sometime this year and have been eying water cooling.
The Kulher has certainly been one I've been looking and would be great to have. I like it's simplicity in handling just the CPU cooling. That clears out alot of space for airflow and cable management in the middle of the case. I'd test it out overclocking my wife's i5 first off though.
Antec has always stood behind their products! I have an out of warranty P182 that had a door hinge break. The door had been out of stock for months, so I sent them an email detailing how I had been patiently waiting for this to come in stock. Next thing I know they ask if I'd be ok with them sending me both side panels and front door from a P180B so the case would match. And they didn't even charge me! Talk about taking care of the customer! They just bought a customer for life! LOL