You can use any snap on "A5" style blades on almost any professional pet clipper. I use Andis clippers exclusively and have for over 10 years professionally, and some of these I still use daily and they are over 5 years old. ( I HATE the heavy Osters, and the air vents that blow hair in my face and eyes, and they are very loud and vibrate, get hot, I could go on and on...lol )Grooming blades are generally called "snap on blades" and any brand will fit on any of the clippers. I used a variety of brands of blades on my Andis, prefering Geib.Oster is the IMO the workhorse of the industry. Yeah, the only complaint is that's it's pretty bulky but it's going to last. If you want the slicker shape of the Andis, that brand has a good reputation too. I'd just avoid the weaker magnetic motor units (from any brand) and consider your blade collection in the process.
Personally, I use an Oster and it works great and I couldn't be happier with the blade selection. I have a single speed. I haven't tried the turbo or two speed units. I bought my Oster to cut my own hair at first so it seemed adaquate. If I was buying for a dog up front, maybe I'd have gotten the A5 Turbo or 2 speed.