I decided to go for it in the current sale, and have to say that I was very pleasantly surprised. The overall feel of the model is better, the detailing seems crisper, and the biggest improvement comes in the sound department, which is far better than the original, so now I can drive it instead of having one of my favourite loco's resigned to AI traffic duties.
All that I need to find now is a BR Blue reskin to compliment Matt's cracking large logo and I will be a very happy chappy!