For me personally, I'd rather take the Sleeper...For a start I don't think there is even a helipad let alone an airport at Corrour
- which is where I'm usually off to, and the idea of 3.5 hours on a sprinter out of Glasgow after having got into the City from the airport, or even longer with Edinburgh doesn't appeal to me!
Other Value that the sleeper adds for me:
1) Since I can easily get to Euston in good time for departure from here, after work, then that allows me to have a couple or three drinks at the Euston tap before boarding (Don't anyone tell me that doesn't have value!)
2) As it's overnight, I don't lose another day travelling, so can take one less day's holiday off work. That adds value for me
3) It gets me in to Corrour around 0900....Which is perfect for getting breakfast before heading out for the day
4) The food offering, while not the cheapest is going to be far better quality than on an aircraft
5) Getting to an airport, checking-in, going through security, then picking up my luggage at the other end, and getting into one of Glasgow or Edinburgh during the day would just eat into my holiday allowance