Wonderful!
I think what bone picker is trying to say is that while some cats can do fine on half dry, half wet, some cats need to be on all wet because they are for whatever reason (usually genetic) more prone to UTIs. It seems to me that your cat is more prone to UTIs than other cats and as such, even the highest end dry food is not going to help the problem, but aggravate it. I think the best thing for your boy might be an all wet diet. If I were you, I would seriously consider it. You will see a decrease in UTI and blockage frequency etc.
@bonepicker he's always eaten high end grain free dry food along with high end wet food. He eats healthier than 90% of us haha spoiled baby