Coinsilo is great!!!!
Stable and fast payouts. Not a problem for me!!!
I mined on them for a little over an hour and had 12 coins unconfirmed. It took 7 hours before the first 6.5 coins were confirmed, then another 6 hours before the last 5.5 coins were confirmed. 13 hours in total to confirm 12 coins. I do not consider that fast.

By default in Betacoin (and in Bitcoin too) it takes 120 confirmations before mined block will be confirmed and miner receive BET.
That means that if you just mined a block, it will take 120*4min=8 hours on average to get mined coins.
NB! that is not a transaction confirmations, that is mined block confirmations.
As for pool owners, they usually make lower confirmations limit for mined blocks to speed up payouts, for example - bet.coinsilo.com have 60 confirmations on mined blocks:
Lowered confirmations, posted Dec 20, 2013 at 05:48 by incrediblehulk
I have lowered the confirmations to 60 to see how it goes.
UPDATE: I have reverted back to 120 confirmations