rainman_02
Contributor
Here is the specs on both, it's all in what you want:
Two Tanked Productions HD & SD Underwater Productions and video services
Nice rip-off of TDL's website without providing credit.
To answer the OP's question: I've never used a Catalina tank. But I've found Luxfer 40s and 80s to be great...including carrying both a 40 and an 80 on the left side.