I just have my laptop, one monitor to calibrate so I use the Spyder3 Express
Spyder3Express - Datacolor - Global Leader in Color Management Solutions

There is also the Spyder3Pro - Datacolor - Global Leader in Color Management Solutions

and the Datacolor - Global Leader in Color Management Solutions

but I am told they all use the same calibrator, it is just the software that is different.

Also the pro and elite give more control, but since I am only using the one laptop with one monitor, I think it is good enough. Having that colour profile though has done wonders for my prints. My prints look like my screen and I don't sit there with a print and a screen shot that look totally different anymore.


Marko did a podcast on the colormunki awhile back if you want to check that out as well.