Opinions from experienced rat owners, what is the best cage, diet, bedding, etc.?

I have 2 female rats and did lot's of research before I got them. I read many different opinions and now I am just curious to hear some experienced owners share what has worked for them and why. So just what cage do you like the most? Why? and same for diet, bedding, care, cleaning tips (like what kind of disinfectant works best), and just general things you know that you think would be helpful. Websites are also nice. My current situation is a large, converted bird cage, with added levels, and hammocks. The levels are covered with fleece, but I have to use little mini binder clips to keep it attached to the levels and it is tedious to clip and un-clip the fleece when I change it. I use Healthy pet dust free cat litter in the bottom-- it is made of cellulose. Their diet it Harlan Teklad lab blocks, with a healthy treat mix (dried noodles, cheerios, oats, etc.) and some fresh fruit or veggies. I have been having trouble with socialization, Hiccup really doesn't like being held so it is hard to get her put back in the cage after free time. Also been trying to teach "come" but seems like they only come when they want to, and I can't get them to go back into their cage sometimes without picking them up, which is really difficult with Hiccup. So just tips and suggestions, and stuff like that would be helpful as well!