There is no right choice, just your preference for whatever reason.
The question is what did you like more, not what Metroid is technically better,
which would make this question unfair since GBA one is technically better....
so anyway, no wrong answer, i wanted to hear other opinions anyway.
Everything counts not just technical aspect. After all we do not play and
love games because they are technically good. I actually hate many of games
that has great visuals and like more games that are trashy visually...but again,
that's now up for debate if they are really trashy even if they are inferior graphically,
cause what we like has so little to do with perfection but other factors,
and that's totally valid to me.