Do all 2860 versions have Remote Dial In User VPN? I want to upgrade from my 2860n to a 2860ac to get the 5gHz but don't want to lose the dial in VPN.

Thanks

Yes they all do. Guess you'd be selling the n? If not, you might want to consider picking up a 5G Draytek AP. I have 2 x AP910c managed by my 2925 which gives better wifi across the house.

Probably just sell the n. My house isn't massive and the router's right in the centre so good coverage everywhere.