65 inch C4 or 77 inch B4…

In the market for an upgrade, currently have a 55inch E9 and moving into a place that allows for a bigger tv. Realistically 65 inches will be the comfortable size but a 77inch may squeeze and would always be nice...

The price points vary a lot (UK) and I’m capped at around 2k, means the options are currently looking like either a 65 inch C4 or a 77inch B4.

Never considered the B4 until recently with the sizing, but keen to know if there are any reasons why I should prioritise the C4 over size.

Will be streaming from an Apple TV for most content and using a PS5 for gaming.