I use the cheap electroplated hole saws. You have to be careful that they are used on low speed and kept wet. You should be able to touch your skin with them while or after drilling a hole. Any hotter and their life is considrably shortened and by that I mean you might only get one hole. If holding a wet sponge on the drill is hard, then I just dip in water now and then and re-dip when the waste in the hole starts to turn to a paste. I haven't used sizes above 35mm. It's important to clear the waste out of the end immediately after each use which on the small ones can be a pain but let it dry in there and you might not get it out.
I've tried the high speed dry use ones for grinders. The rubi ones I tried were rubbish on some tiles and great on others. Totally inconsistent. Once the wax hole blocks up (easily done) they stop working properly. I gave up on them. I also worried about the shear amount of heat the
tile had to absorb and the possibility of heat fracture cracks (it never happened though) Their life is also suspect when compared price wise to the electroplated ones. I think their advantage is you don't need water and so they can be abused and not fail. But electroplated hole saws are faster and last longer in value for money terms in my experience. But I get that others may have a different experience.
I've also tried the smaller dry use marcrist hole saw and again, slow and poor value for money. I'll be returning to get my money back.
