The MOJO Horn Section samples are pretty good. I like them a lot. I am still learning how to use them (as well as learning how to write horn parts), but its pretty quick and easy to get decent horn lines right out of the box. I love being able to go from solo-10 players spread across the stereo spectrum with just the turn of a knob. I like being able to get tons of articulations with key switches, instead of having to load up separate patches. The "humanize" feature is pretty cool too.
The one problem I have with them is that they are extremely resource intensive. On my set up, which admittedly is fairly old now, I can only load up 2 full instrument patches and 1 "riffs" patch at a time. So, what I've been having to do is make 2 project files. One that is the "main" project and the other one I use to switch out patches and bounce the midi out as wave files. When I'm all finished, I dump all of the wave files into the "main" project file, do some mixing, and then export it. I'm sure there is a better way to do it but I just haven't taken the time to figure it out.
And the patches load slooooooowwwwwww. When I open up a project that has two instances of MOJO horns, I literally walk away and find something to eat or watch some TV. It takes forever.
Below is my second attempt at some 70s game show funk with MOJO. There is one sax loop in their from Logic, but the rest is all MOJO:
http://www.taximusic.com/stream/331639/ComeOnDown.mp3
I think that if you were to really learn how to write horn parts and how to use the samples, you could do a lot with just MOJO.
-Steve