That is like opening a can of worms to ask on a site like this : )

if you want to look as "cost price averaging" - i do actually suggest Quark -

there are a few others you might look at, but do your homework -  if you were to look at it like equities , forget PE ratio start to look at :

Total Cap -

Emission structure - 

Distribution

Algorithm

etc.

if you can browse these you will give yourself a head start .

otherwise i guess just gamble ?