If I wanted to get into watercooling, what would you kind people suggest?

For best performance, don't buy a kit, but put the essential pieces of the watercooling rig together yourself. Most kits are not fully optimized.

This is what I ended up buying :
Eheim 1048 pump
Innovatek reservoir
BlackIce Xtreme radiator
Swiftech waterblocks

This gave me a pretty good setup, with CPU temperatures not exceeding 37°C, no matter how hard I'm overclocking my CPU.

But THE best feature that came with it (for me) is the noise level. My PC is now practically silent.