IMHO, Mizani Moisturfuse is 2nd to none! Past that, the Goldwell Kerasilk/Definition conditioner lines (expensive end) and (on the cheap end) Motions. Of the two more expensive brands, Mizani is the cheaper being about $8-10 for a for 8 oz or so......Motions quite reasonable and available almost everywhere.
End of the day, IMHO, it's all down to what you want to spend.