most concerned with transaction speed and stability. A coin that you could use for point of sale and not worry about forks
If you want a PoW-protected ledger, AFAICT the most solid path currently would be a full-history fork of the latest Bitcoin Core 0.9.x, configured to use BLAKE2 throughout for hashing ... or, if you're concerned about best performance on pos-grade kit, browse
the performance graphs, make your own selection.
Cheers
Graham