I am gonna try it, never done it, only read few discussions,
There's a lot of FUD out there concerning p2pool, and some of the warnings are more or less true for the litecoin or bitcoin p2pool (but only for them).
on p2p pool list is 2nd for 1.5-3Mhash, and here are less than 1M on 2nd , is there any benefit if I go to 3rd from 2nd ? ( I have 620 khash)
thanks
These hashrate categories are no strict rule, they're more or less informational.
At first you've to understand that on the long run (say: three or four weeks of constant mining) you'll earn the same amount of VTC regardless on which of the three p2pool networks you're mining. (Use one of the mining calculators to know how much to expect for your hashrate. Keep in mind that the VTC difficulty does change quite a lot, see
http://www.coinwarz.com/difficulty-charts/vertcoin-difficulty-chart or so.)
On the first p2pool the pool share difficulty is quite high (120K at the moment), so it is difficult for your miner to get a share at all. But when you get one, you'll get lots of small payments quickly, as the pool finds a lot of blocks (roughly 50-60 blocks per day). But one share is only valid for 12 blocks, so there will be times where the pool finds a block and you get no payment, because you're too small to find pool shares quick enough. If you can live with that, you are fine even with the biggest vtc pool (remember: these "times of no payment" are a purely psychological thing. The sum of your payments will be correct according to your hashrate.)
If you - unpatient as most miners (including myself) are
- prefer to get regular payments with each block the pool finds, you're better off with the second p2pool network. Share difficulty is at 20K atm, and the pool finds about 8-12 blocks per day. As a share is valid for 12 blocks also, you can be certain to get paid with each block found.
The third p2pool network has quite a low hashrate atm, so it finds only 0-2 blocks per day. This can be an advantage if you prefer to get only few (but bigger) payments, or if you're a really slow miner (say you have an old spare GPU which does 50KH/s or something). So I personally don't like it, but as far as I know there's no disadvantage to use it.