Watch the breaks. Some are better than others. I watch some and cringe how they open the packs. Dinged corners? Yes, please!
But to put my two cents here, I don’t do the purchase break slot stuff. Works for some, not for others. It isn’t for me. I guess I am greedy when it comes to breaking boxes myself and getting whatever comes, good and bad. I do however watch breaks online to see what is being pulled and to get a feel of the product. For the group breakers, CnC is the easy one to watch, D&A does some, and I haven’t seen most of the posted groups but this would be a good thread to use as a reference to check them out.