I have the ABEC 7’s. I use the Yellow Rocket Fuel to lube them too. They are nice and I do notice an improvement over the stock bearings. Can I quantify it? No but I know I can cast a bit farther. I can also get a better backlash too . I haven’t tried ceramic. At some point though I think we are splitting hairs so thin performance wise that statistically there is very little difference unless you are a big money tournament fisherman. For those guys the 1 or 2 more fish a year could mean big money.
I’d just go with the ABEC-7’s unless the money is burning a hole in your pocket. If you get the ceramics, report back next summer and fill us in.