I'm not sure how many refurbished sets Scotrail have got (7 I believe) but I've a feeling we're getting there as regards the refurbished HST's!
Since HST's have been reduced, it's made me fall in love with (and encouraging me to) choosing to reserve a seat in the Mark 3 coach next to the power car - in fact when I go on a GWR 2+4 set, I'll aim for the back of Coach A or D (D being the front or rear coach) depending how the train is formed.
That's one great thing about going First Class on a Scotrail HST - the First Class coach is next to the power car!
I think my favourite window table seats in Standard Class on the XC HST's are the ones where the table in Coach G (Quiet Coach) next to the Guards Van which conveniently happens to be roughly where the train manager's office is - handy if I need him or her for good reason obviously
!