When I checked your dates YC rooms started at $444 (did not find any at $350 so it looks like you got a good rate) and Four Seasons rooms started at $499, so a $55 difference. Worth $55 more per night at Four Seasons...in my opinion yes.
But anyway, not trying to argue with you, you were concerned about the YC room (which I have never been unhappy with, guess I have got lucky in room assignments) and I was just offering an alternative that, to me is very, very nice. In fact, to me is on a whole different level. The Beach Club is quite nice too and if you decide to switch to BC, hopefully you might get one of the refurbished rooms. Either way, have a good trip.