I was a new guy to the red dot world and started out on the Leupold Delta Point Pro. I like it. I have several Glock pistols with them, G34, G35, G20, G40, G41.
Here are my 10mm pistols with the DPP. I mainly use these for hunting where the larger window is a plus IMO.
I am issued a G45 with an RMR, I still prefer the DPP.
Are others "better"? Perhaps, but the DPP gets it done for me. I've shot some stout reloads out of the 10mm pistols and so far the factory plates with aftermarket screws has been 100%.