Best spearfishing dive gear bag?

I have used this bag Beuchat Mundial Backpack for a few years and love it. Keep my gun separate although the bag has bungees for it on the side.

I have had good luck with a snowboard bag too

I bought it many years ago off eBay. It was inexpensive. I'll check the brand later.

It has plastic zippers and the inside is lined with heavy duty tarp. It is not waterproof but holds water and keeps the mess inside.
I use it less now as I just carry my guns and fins separate from my big dive bag but I can fit one divers gear inside easy