How to best order Mitsubishi heat pump units if you not a dealer

Self installer here, but i have my license and have installed a few before so not completely numb, but havent ordered a Mitsubishi before. Where's the best place to order them if your not a dealer with Mitsubishi? im just ordering one for my house and don't need it to be diamond dealer certified.

went on hvacdirect.com where they have some but the website is not very user friendly, im looking for the best and latest, most efficient 3 zone hyper heat that does 3 9,000 BTU wall mounted heads off a 3 zone outdoor unit likely around 28,000 BTUs. Anyone know what model # this would be or if i could find it better somewhere else?