For LTO1, not sure if this is true for LTO3 or LTO2...
I would go with the brand recommended by the tape drive manufacturer. The tricky part sometimes is determining the manufacturer of the tape drive.
I have had engineers tell me to only use the recommended brands as the tape drives can spend several minutes calibrating themselves against tapes that the tape drive finds "difficult".
Also, if it ever does come down to a critical problem, you don't want the tape drive supplier to turn around and say "You're on your own buddy, you used unsupported media".