"Competitive" jobs are fashions, and fashions change. What's great today may not be as great by the time a board is looking at your record, and vice-versa. I had a skipper who took orders to Fallon for his first shore job before E-2 guys went to Fallon. Everyone told him he was setting himself on fire, but he just wanted the camping opportunities. By the time he was up for screen, Fallon had become the "place to be" and he looked like a forward-thinker.
The FRS is always in fashion...nonflying, outside the community jobs very rarely. Everything else is in the middle. But Fester says, take the jobs you want, that you would find interesting, challenging, educational, whatever your goals are, and let the chips fall where they may. Plenty of guys have checked all the blocks in the correct order, bubbled in everything fully inside the lines with their #2 pencil, and still found themselves without a chair when the music stops...if I may mix my metaphors. Of course, Fester's just an asshole Reservist now, so feel free to disregard my wisdom.