I have a KTR700 and a 1500S that's been throughly tweaked at the factory. The 1500 is a wonderful horn in all ways, except for the resistance. I'm a former bass 'bone player and I feel more comfortable on a low-resistance horn like the KTR700.
That 700 is a better trumpet than any Strad or other "pro" horn I've played with the exception of a 45 year old Calicchio. Still, I like the features of the 1500.
What Kanstul pro horn has the lowest resistance and is suitable for classical and jazz (not lead) playing?
BTW, I'm playing Kanstul M-B4S and B4L MPs with #16 throats and Prana backbores.
John
http://home.cfl.rr.com/themuterack/
Cape Canaveral