Scones with mascarpone

I'm on a quest to find the perfect scone. I've tried recipes from various people - Delia, Mary Berry, Nigella etc but still haven't found one that really makes me feel - yes, that's it!
Trying out yet another recipe today, one I've made before, I decided to try using some mascarpone as well as milk to make it more moist. I also used soft light brown sugar instead of my usual caster sugar. Would this be my perfect scone?
Here's my adapted recipe:

340g sr flour
1 tspn baking powder
80g butter in pieces
2 tbpsn soft light brown sugar
80g mascarpone
90ml milk
1 beaten egg to glaze the tops

Preheat oven 190C/gas 6-7
I used a silicone mat on my baking sheet, but a dusting of flour on a sheet would be fine.

Put the flour, baking powder, butter and sugar in a food processor and blitz till breadcrumbs. Add the mascarpone and blitz for a couple of seconds. If you don't want to use a processor just rub the fat into the flour and sugar then rub in the mascarpone. Tip this mixture into a bowl, make a well and add the milk. Use a knife to mix and your hands to bring it all together. Don't overwork it.
Roll out gently to about 2 cm thick, then cut out rounds with a 6cm fluted or plain cutter.
Brush tops with the beaten egg and bake for 10-12 mins till golden and risen. Cool on a wire rack.

I was very happy with the result; they rose and had lovely golden colour.I just gently broke them apart and buttered them and added home made strawberry jam, but no cream! They were really soft and the brown sugar gave them a lovely taste, but they weren't too sweet. I'll certainly make them again, but my search for my perfect scone continues.