Yes Rs ones are the ones made by Trooper1, I have a orange one from Rs and a white direct from Trooper 1 and they are definitely made by the same person....
Rs are pricey,but you are getting armour that is directly from screen used,something that other sellers can't say ! The other main uk seller is TM armour,his armour is very nice too...
Saw one of there Dlt -19's on one of my visits to there studio last year, looked very nice, they were just finishing it off. ..no idea on price though!