I have a 3 by 4 as a regular carry, a 4 by 8 for storage and a 1 by 2 just for the heck of it. I have bought and sold several. Best bang for the buck and great protection for your cues.
4x8 hard cases are just the best....... You can transport your favorite player and a backup cue,
a jump cue and break cue or any variation thereof, plus a hard outer shell case adds durability.