What Impresses me most about EL is generating 13,983,816 (all Combinations of a 6/49) in about 3 to 4 seconds!
Another thing thats very impressive is the ability to tailor a system just as we want it to work using all balls in the barrel if we want. I also want to point out the best Tickets filter which is awesome to catch at least something... even if its not the Jackpot,smaller prizes are always welcome and if one has some patience, it will pick out the ultimate best tickets (amount you chose) out of hundreds of thousands.
I win regularly with Best Tickets feature