I stand corrected from a quick bit of research most .30 cal cans are about the same weight. It's been a couple years since I did my research on them. What I do remember is when it came to weight, some manufactures weights were with the CB and some were just the can which made weights hard to compare.
I ended up purchasing a Griffin for my .30 cal can and am quite happy It has lived up to all my expectations.And it was almost half the price of a TBAC.
Much like many others on this site I do not own multiple different brands .30 cal cans to compare it to so I could not say if it is better than any other can.
My latest research was for the purchase of a can for my .338 Lapua.
In that size can there is quite a bit of weight difference between manufactures. I went with a Crux but can't comment on how well it works because I've only given the government 10 months to do the paperwork so far and I guess thats not enough time.
Not trying to change the topic of your thread, because I know what I'm going to say here usually gets a lot of comments.
I'm sure TBAC are great cans with good reviews, but it seems to me to be a supporter type following.
There are lots of great cans out there that are proven to work great with great reviews for less money.
I'm sure you wouldn't go wrong with a TBAC or almost any of the other major manufactures products.