What's wrong with them? I'm only asking as i bought 16GB of Team Group from OCUK recently, it was the 3600Mhz CL16 8Pack Edition.
Nothing: They buy the RAM on the open market like every other brand from the same small selection of actual manufacturers. If the parts fail in the EU you go to the shop, not the manufacturer (so quality of support is irrelevant). It is RAM, so there is no drivers, software etc to worry about.
Team Group have terrible marketing tactics and have enough people in their TW marketing teams who I would never trust in a million years. Product's fine enough but I couldn't care less about their existence when there are so many alternatives around.
Those anti-adverts that whichever big company wot owns Oasis soft drinks does. I like those. "It's summer. You're thirsty. We have sales targets. Oasis." Those ones. Also, Burma-Shave.
I guess you can add Old Spice to that list... or can you? Because even though I love the ads, I ain't paying to smell of Old Spice.