AJAX System? Yay / nay?

[The Horseman]

So in an effort to better my security I was considering upgrading to a smart alarm system to replace my usual wired alarm. Not sure the model but not new.

Priced the Ajax system for my needs and it's like R21 000. Which is pretty hefty. Anyone have one that they can comment on?

I also haven't managed to find any mid range wireless systems, wasn't so sure on the Yale ones.

Thanks