A difficult question to answer without appearing biased and opening myself up to a stream of invective.
For an objective view you would have to go to the NSP website which lists the makers with prices and delivery times etc.
My own pipes are made by Colin Ross.
Most makers have their own web sites: Ray Sloan, Barry Say, Richard & Anita Evans etc etc. (Andy May is starting to make pipes and he is playing at the Bell Hotel in Driffield on April 15th with Simon Haworth if that is not far from where you are.)
There are makers in the US as well.
If you are thinking of having a set made I suggest that you talk to as many pipers as possible - of course you can meet a lot of these on Saturday night ;-)
All the best
Ged