Yes there is one.
From last thursday to sunday I was up in Scotland as I am many times a year, but this time I thought I would actually pay attention to the railway and spend a bit of time on it and around it.
I can moan on and on about Northern rail, but on the Edinburgh- perth line via Abergyle, Kinghorn and Markinch etc is a service I cannot fault in any way. All trains are clean, in a good livery and operate frequently. DMUs such as 170s, 158s and the odd HST are regualar. The views are stunning and the staff are polite. I would reccomend a trip on this line on a sunny day so the forth bridge can be enjoyed in all it's glory. Waverley station is one of the friendliest stations I know. The staff are helpful and the city around it is magnificent.
The best place to view trains in and out is one of the foot bridges accross the line at Princes street gardens. This is between the tunnels.
One thing missing is freight- that uses an avoiding route.
The old haymarket steam shed that once stabled A3s and A4s is still intact and houses DMUs.
Steam in Edinburgh is a recent event.
Stock at the station is: 158s, 170s, HSTs, 225s, 185s, 156s, Voyagers of various companies and a sleeper.
Not a 142 in sight. If you can go, do. It won't be regretted.