Operation takeover actually dropped in 95 or 96. I wouldn't really consider it a JT album. Its more like a GLP album and JT isn't even on all the songs. It is also the debut of the Gamblaz when Sky Skerz was with them. It is produced by JT, so you know its gonna sound tight. Its one of those albums you can hear from begin to end without skipping over any songs.
Something Crucial dropped in 2000 is another classic by JT. He has a lot of features on there, but all of the features come tight.
You can't really go wrong with either album. I can't really tell you which one is better because both are knockers but if I had to choose one, I would probably go with Operation Takeover, but thats just my opinion. Depends on what kind of sound you are looking for.