Bought the Bikeerg in Nov, you can connect the computer to Zwift and Sufferfest really easily. Like the build quality and they only make about 5 things so spares would be fine. My other half has actually done a lot of road cycling outside after getting into it over the winter, so my vote is for the bike.
Pros:
– Super fast to change set ups if you are all different sizes and no oily chains or swapping wheel/tyre shenanigans
– Pretty quiet compared to magnetic or fluid trainers
– Light, compact and easy to move around but still solid I.e. not a 60kg Peloton monster
– Can’t see you ever “topping out” in terms of resistance as it increases with cadence
Cons:
– My wife found it hard to remember the fan resistance settings for a given power/cadence, a taped on scale helped make it clearer
– Does not change resistance to the workout automatically, I’m fine with that but then repeated more workouts so could shift quickly
– Expensive, but should last an age with home use