XC shitty implementation
DRK not working
XMR bloating hard
Zero____ sketchy as fuck
BlockChain.info CoinJoin implementation not even working
ITT we all lose. It seems no one can get it right.
(BBR) Boolberry coin fixed the bloated blockchain problem through use of transaction identification by prefix as well as removing dust from the blockchain in general resulting in a much smaller sized block database compared to XMR.
Bloating issue of Monero mainly come from countless dust transactions of pools. It has been fixed now with new pool software.
Boolberry use same technology as Monero so the difference is not much. BBR has smaller blockchain because it's new and don't have many transactions as Monero.