I'm probably in the minority here, but I am not a big fan of HSGI Tacos. I do love their other products, so that is nothing against the company. I just don't like bungee cord on things I need to retain in a life or death situation. That said, on my last contract in Kabul, I saw a bunch of ODA guys that were using the Tacos running around NKC, and they liked them.
I just gave up on finding the ultimate solution for multiple magazine sizes. I know have identical belt and chest rig setups for each caliber I have. Of course, I don't use those big warbelts with 3 magazines each of rifle and pistol mags, either. Not do I have multiple body armor setups. I use a plain, basic duty belt with a Safariland 6378 and 1 rifle and 1 pistol magazine pouch (if that...most times I don't put pouches on my belt). I use a slick plate carrier underneath my SOE Micro rigs set up for each caliber (7.62, AK, 5.56) that go on top, so it's not unfeasible for me financially. I doubt I'd buy plates for and set up 3 different plate carriers for each caliber of magazine.
Edit to actually answer your question: I like Emdom and their pouches. Good stuff.