Is there a place to see what formula you use to see which coin is more profitable to mine? I don't seem to agree that FTC is the best now. Coinchoose says the same
look at coinchoose adjusted for stales, it agrees. Going with a straight profitability is fine if you can expect 100% PPS somewhere for each coin, but if you're counting on finding blocks then stale/orphans have to be factored in as well as faster coins causing more rejected shares. that all lowers the actual profitability, i'd be interested to see flound's actual stuff though.
While agree to a point with what your saying I think some of these estimates are off. Wdc according to coin choose and here sits at almost a 30-50% decrease in profitability due to stales/rejects/orphans. From my experience mining wdc exclusively I only get about 8.5% stales/rejected and know there isn't that many orphaned blocks to make up that difference. I've actually made quite a bit more revenue mining wdc instead of FTC for the blast few days since my actual results are much much better than what multiport suggests. I also would love to see what calculations are used to figure in that profitability.
+1 I would also be interested in seeing what percentages are being assumed for the stales and orphans.
WDC:
mysql> select count(id) from winning_shares where confirms=-1;
+-----------+
| count(id) |
+-----------+
| 882 |
+-----------+
1 row in set (0.01 sec)
mysql> select count(id) from winning_shares where confirms>120;
+-----------+
| count(id) |
+-----------+
| 12842 |
+-----------+
1 row in set (0.00 sec)
So we have 882/12842 orphans. That's 6.8%.
DGC:
mysql> select count(id) from winning_shares where confirms=-1;
+-----------+
| count(id) |
+-----------+
| 205 |
+-----------+
1 row in set (0.00 sec)
mysql> select count(id) from winning_shares where confirms>120;
+-----------+
| count(id) |
+-----------+
| 3006 |
+-----------+
205/3006 also = 6.8% (interesting..)
So, the profitability calculation should subtract around 7%, minus whatever stale percentage we're currently at. Right now that's normally around 5% from what I've seen (I don't have historical stats on this, though, and the number of shares kept in the DB for WDC and DGC is fairly low due to the low difficulty.)
I'd say 15% for both should be fairly conservative. We're currently at 20% for DGC and 25% for WDC. (The extra 5% for WDC was based on it having slightly faster blocks than DGC)