This is a funny question, but the answer is not might be as funny as you think.
This question is very relative, if you ask me which is the best HYIP today, I might answer Minvestment or OpenTrade
If you ask me this question again in a few weeks, it might change. That is because the best HYIPs are always the HYIP that has been paying or if I was in profit as of today, it is the best HYIP for me. But it is not necessarily means it the best HYIP for you.
If it does not pay me anymore or if I am not being paid, then it is not the best HYIP for me anymore
I guess that is the reason why no one says that 100% of all HYIP programs are scam but rather 99% or even 99.9% of all HYIP programs are scams.
Because the 1% or 0.01% programs out there are the best and are paying.
So the best HYIP for me are the ones that are paying and I am in profit with the program.
Easy answer…. 
I guess this answer will have to be reveal later…

Well, I look at HYIP in a different light, if you have read my article on ‘My Reason for HYIP’ you will come to understand my approach.
To further elaborate on that article, I took out the word ‘invest’ and replace it with the word ‘play’ which means I do not invest in HYIP. Rather I play the game of HYIP.
In any game, we play to win. So I play this game to see if I can win from these programs may it be scams or ponzis or even legitimate programs.
For $1 (more or less), we went out to buy a lottery ticket, so what did we just buy? We bought hope, hope that we are the next one to win the lottery.
We go to the casino to with $100, do to what? To try out luck and see if we can beat the house. Even though we know that the house always wins. Some say it’s for the excitement. Casino or gaming is not categorized as under the entertainment industry for nothing.
Well, let me ask back the question in a different manner, if we know that in the gaming business or industry such as Casino and the Lottery, the House always wins. Then why do people still want to try their luck and gamble? Or if the chance to win the national lottery is a million to one, then why the heck do people play the lottery?
The answer is quite simple, because people by nature are hopeful. They hope that that there is a legitimate opportunity out there.
Another nature of people is that we are most of the time ignorant and greedy and will always seek out more than what they have presently, like our current interest rates in our fixed deposits or our mutual fund/unit trusts. The returns can’t be seen instantly.
HYIP provides the return in a very short period of time and this is what entices people to invest in these programs even thought most of them know that it could be a scam or a ponzi, they will continue to put money in hopes that one day they will find a good and legitimate opportunity or program.
One single word…. Leverage.
With bigger capital, they can not only diversify their portfolio but also allow them to make a greater return on other derivatives(futures) financial instruments such as foreign exchange, index futures, commodities futures etc etc.
What I mean by leveraged financial instruments is that, most of these instruments allows the trader or investors to control a bigger amount on contract with a small ‘goodwill’ or marginal deposit in a financial institution.
For example, in forex investing, with a USD1,000 margin deposit, an investors can control as much as USD100,000 worth of foreign currency. If they have say USD100,000 margin deposits the investors can control a whooping USD10,000,000 worth of foreign currency. This is the same for other derivatives instruments,
To further explain in a bit of detail, let’s assume an investors purchase EUR100,000 at the EUR/USD exchange rate of 1.18. Meaning he is controlling USD118,000 with only USD1,000 security/margin deposits.
After a certain amount of time the exchange rate between EUR/USD is 1.2500. If the investors sells his/her holding it means that he should get back USD125,000. Thus, the difference is USD7,000 which belongs to the investors.
That is almost 600% return!
But in reality, most great investors can actually make as much as 120% return on their portfolio.
Anyway, coming back to the question, if the program owners can seek other investors to pool in so that he can get higher margin he can actually control more equity so that USD7,000 can actually be USD70,000 or USD700,000 depending on the pooled amount.
That is what it means by leveraging on investor’s money…..