I would invest my money in moneypot if I was you. Like some else said in this thread, investing in a lower bankroll allows you to profit more during the swings. It can also mean you could lose more, but in the long run ofcourse you would be in the winning side.
Have you seen that post with table, showing bankroll investment comparison, which BetKing posted in this thread?
If you study it, you will see that MoneyPot investors recently suffered loses (same with SatoshiDice).
Currently the best option for investing is BetKing, CryptoGames and SafeDice.
Very true, however OP, if MoneyPot bankroll's starts to climb back up, I'd advise in investing in them as they've been around for a long time and are trustworthy.
Most of the trustworthy sites to invest in have already been listed, but you can also check out Just-Dice.com. They don't accept bitcoin investments, but if you are willing to trade your bitcoins into CLAM, they might be worth a shot.