I think that you chose well, you have two of the best guns available for under a grand.
Simple answer is pick which ever you like most, as neither of these guns will let you down. Shot count on a s410 classic in 177 is about 70 good shots more than enough for a GP.
EV2 mk2 with 2009 big Nikko
HW97K with 6-24 Nikko Nighteater