Silverion77,
for the price, BlackIce Extreme III's or the Quietpower series are nice - they cost about 1/2 as much as the PA series and do quite well. The PA series of rads are nice and, statistically, superior but they don't produce results twice that of the BlackIce Extreme or the Quiet Powers.
I opted for the Black Ice Extreme 3 series, which you can get a 3 x 120 rad for around $80. In the Quietpower series a 3 x 120mm rad would run you about $60 compared to the Thermochill PA 120.3 which would run you around $160 - give or take.