I've had both and like both of them for different reasons. The Tahoe IMO makes a nicer daily driver .... because you are less likely to mod the heck out of it than the Disco. The 2004 Tahoe I owned had great road manners, was very comfortable on long trips and had lots of cargo space plus a removable third row seat. It was a great cargo and people mover. The off road capabilities of the Disco, however, left the Tahoe in the dust even with as simple a mod as a mild lift and 33" tires. The only Tahoe maintenance problem I had was with the electronically engaged transfer case that would occasionally flash the "service 4WD" light and act unreliably when shifting in and out of 4WD.