777 F is quite nice - big seat, one toilet per two F passengers (when F is full), staff are physically closer to you in the galley so may be more inclined to engage. The cabin is noisier than the A380 and of course you have less space than Suites. It's a much more conventional design of use of space - Suites are innovative but slightly miss the mark in some respects. So I think there are merits to both, see some trip reviews for yourself.