The best bugle, IMO, is the Primos terminator. This thing sounds awesome and is easy to learn to use. It also uses silicone reed that does not rot and crack like the latex reeds do. You can really get some great growls and great multi pitched tones with the terminator.

For cow calls I really like Sceerey A.C.E. calls. These too sound great as well and are also easy to use.

The hoochie mama sound good too but what are you going to use if you need to stop that bull walking when you are at full draw? Sceerey has one that is very small that fits in the corner of your mouth for just this purpose.