Each one has their advantages. Ones not better than the other, snap on makes some better tools, and matco makes better tools.
I prefer matco air tools over (yes it's rebranded, the truck service is worth it imo) snap on, I prefer snap on hand tools over matco.
One thing I definitely recommend from snap on is their air hammer, it's pretty agreed upon as the best. Honestly, do your research. Get more affordable tools to start out, here's my reasoning.
Please don't take this the wrong way, but most techs straight out of school don't make a lot of money. Not at all saying your skills are incompetent, it's just what I've seen. You gotta earn the trust of a shop to handle more complicated repairs. Being in debt to the tool trucks *****
Build a solid foundation of good tools, don't spend top dollar for everything. Go ahead and buy some stuff, I believe wrenches, ratchets and sockets (less so than the other two) are 100% worth getting off the truck. but not everything needs to be snap on or matco. It's still quite expensive with 50% off. Get Things you need from good affordable brands. Once you get out in the field you'll have a great idea of what you need to upgrade. I got on the tool trucks my first day as a tech and have quite some tools I thought I NEEDED that i paid top dollar for that mostly just sit in my box, use only occasionally and I'd be fine if I went for a lesser brand.
You have the rest of your life to owe snap on, and matco. When you get out in the field you'll have a much better idea of what you should upgrade to those brands.
I did however like the suggestion made by another member of getting a quality bigger service cart. My 6 drawer Cornwell cart is one of my favorite purchases. Good luck with starting your career, it's hard work but can be a lot of fun