Just looked at Amhash and can not believe anyone would invest in them. Their price is ~25% less than BDD as of this posting, but they charge a maintenance fee that's ~32.5% of payout. So to save ~25% on purchase price, you lose ~32.5% of what you mine daily.
As an example: If you purchased 250 ghashes from Amhash and after the maintenance fee, in effect you would only have the mining power of 167.5 ghashes. Where with BDD, if you purchase 50 units your mining power (even though its not true mining) is 250 ghashes. That's 82.5 less ghashes!!! At today's difficulty that's a lost of 0.03200507 BTC a month.
I guess most people only look at the purchase price, and I agree 0.0012/gh looks better than 0.00161/gh. But, you have to look at the total cost involved.
Has anyone found anything better than BDD?
BDD has an "End Game"; go to page one and read it for yourself. Once the bitcoins runs out the BDD fund manager will buy back all units at no cost and BDD will NO LONGER exist. I admit it is a great short term investment....but short term only. So you can complain about AmHash all you want; but as of Dec 20, 2014 it is the only mining fund that is actually paying good ROI. Peta sure sucks; even though they switched to Slushpool instead of Ghash they still suck. And Scrypt will soon be deleted and converted to AmHash3 units; and then will no longer exist.
So for a longer term investment I suggest AmHash as of Dec 20, 2014. Just remember anything and everything in bitcoin eventually changes; so what is best today may not be best 6 or 9 months from now.