Bottom line. $$$$ $5000.00 is what it's going to cost going in the door if you actually want to CERTIFY you installation. Micro-Tek, Fluke about the same overall. It really depends on what your needs, goals, and expectations are.
Professionally and personally -- call the manufactures directly, explain your needs and weight the bells and whistles VS common features of the products and buy with confidence. Just make sure training is included in the price. There's a $@!*&&^! of information to learn and understand when dealing with CERTIFICATION.