I've been crunching the numbers of buying 5 year GHS vs 24 hour and I think the 5 year is always the winner. In the 24 hour GHS, you get 90% of the 5 year output in a 24 hour window. This is great if you are making coins to cash out but terrible if you are trying to build up GHS. On the test I did, I would have ended up with more GHS just buying the 5 year than I gained with the 24 hour. Also the payback time scale of 16 months for any money/coins you put in (even from the free non-eobot faucets - probably better to send them direct to your non-eobot wallet).