for blocks... the Apogee GTX with copper top, for no corrosion of course
or the D-tek Fuzion. There was also a pretty fresh one that was supposed to rock but it was something rediculasly (SP) priced, If your interested in it I will look into it.
The pump Iwaki are super rad, They are some of the best around! But again, if you want to save, Laing are still cool.
Tubing, Everywhere I go, People Rave about Tygon, But you could pick whatever you want.
for the Radiator, I believe its a thermochill PA 120.2 or 3 are some of the finest around. Should get you close to $300.. I was thinking of going water, but for the time being and budget, I have really no need except cool factor.
If your selling your Air stuff, Hit me up, I need a good HSF.