Purely for scientific analysis, let me set up my rigs to jump on to some pure alt-coins... I'll do some measurement on stales and rejects
I'll set them up for all of these, but while I'm doing that, if you would put them in the order you'd like to see data...
Litecoin (LTC)
Terracoin (TRC)
FeatherCoin (FTC)
Mincoin (MNC)
WorldCoin (WDC)
DigitalCoin (DGC)
NovaCoin (NVC)
LuckyCoin (LKY)
Argentum (ARG)
PhenixCoin (PXC)
MegaCoin (MEC)
BottleCaps (CAP)
Only FTC and LTC would give you reasonable test results, because the majority of the hashrate on those isn't profit hopping.
All the others increase in hashrate by 10X or more, when they move to the top of coinchoose. Like mincoin goes from 30 MH/s to over 1 GH/s when it's the most profitable.
FTC would be the most useful to me. We have only mined a few hours of LTC in this pool, so I don't have the data.
Edit: also, I would only do the test when FTC is on top of coinchoose. Although there is less profit hopping on FTC, it probably plays a role.