I'm happy for them you found them!
Truth be told, I've just about servers my gliders pretty much all the forms/ brands of HPW type diets, with the exception of the jar food YUK!
This can be confusing, I'm using acronyms, here's a brief history and a key:
HPW - High Protein Wombaroo which uses Wambaroo high protein supplement (WHPS), created by Peggy Brewer. Peggy has done extensive studies and works with experts to formulate her diets. She then formulated her own, American brand of high protein supplement. The HPW diet then was labeled the Original High Protien Wombaroo diet, her new diets were named HPW Plus, which is made the same way as OHPW, and HPW Complete, which is an instant formula. There was much confusion with the EN brands, Peggy had her business name trademarked and renamed all her diets Critter Love Brand. So OHPW is now CLO (Critter Love Original), the other diets are known as Critter Love Plus (CLP) & Critter Love Complete (CLC). She also has other varieties. I cannot link her website, due to my pic being in shop now, but you can find everything about these diets on the website and I highly recommend checking it out. Try googling the Critter Love Diet Center, it should come up.
I started with the EN HPW kit, then switched to the real OHPW, which is made using Wombaroo brand HPS. Then I had to move across country so switched to CLC. I used this diet for almost a year because of the simplicity of it and my living arrangements at the time. I then had to move back across country, to save some money I purchased th EN Intant (EN uses a different brand of HPS as well, I believe ZooMed). I used it for a while, then switched back to CLC. I switched back to CLO, and am currently using this formula.
As for pellets, I use PetPro Happy Glider, they're good quality and popular for those that use pellets. I serve them in their forage toy containers.