Agreed, Carbon even has a couple HU MTTs; I know a PM $2.2 for sure.
If you are looking for just 2-4 entrants at the low stakes for USA play I would put $50ish on Carbon, Bovada and BCP or ACR and just spread your play out.
The most simple and easy to play one-on-one on the poker room Titan. Players are weak and play with a wider range of hands! Therefore we advise to wait for strong hands and push! A player with a weak hand on the flop will call you till the very end!!!