Ethash is the "default" option for your graphic card, but in terms of profit, I don't think you would be that far off if you mine cryptonightv7.
The best way is to try, because websites that estimate profitability like whattomine can be unreliable when it comes to finer details.
As for wilkeccak, you would also have to experiment on your own, as it is a relatively new algo and there are no reliable estimates just as yet.
Power consumption, noise, and heat dissipation are factors that are very important as well, but many people choose to ignore them.
All things considered, IMO it is also important to choose a solid coin that will appreciate in value as time goes by.