Thats the way to go. Buy from the dealer who gives you the best price, service at the best A.S.S that you can find.
Be aware that what is good for one(service wise) may not be good for another. I mean, people can have good and bad experiences at the same A.S.S and each then forms his own review. So do not take reviews as gospel, unless it is the same picture presented by everyone(even then, take it with a pinch of salt).
I have had both good and bad experiences at Pratham A.S.S, but I still go to them, because, by now I know everyone there and more often than not, they do the job to my satisfaction. Or rather, I ensure they do. By now they know I am a finicky customer, so they try and minimize my visits to them by giving good service.
