We usually stay deluxe or at CSR - as a PP said, it has some amenities that make it closer to a deluxe (room service, queen beds, a fitness center, upgraded toiletries, huge hot tub, excellent bus service and the second best pool on property behind BC/YC).
However, for parents of preschool boys, CBR is probably a great choice. There is a pirate ship splash area that wouldn't appeal to my kids at all (they are 12 and 9), but it would probably be great for little boys. You can also book a pirate room, but as a PP said, they are far from everything and the mattresses don't get good reviews.
We wouldn't stay at CBR because it has double beds instead of queens and the bus service doesn't get good reviews (there are seven internal stops, but it doesn't share with any other resorts). If either of those concerns you, you might consider POFQ. It is smaller than the other mods, so there is less walking for little legs. And the pool looks like it was designed with little kids in mind. POFQ has been recently refurbed and has queen beds. It sometimes shares buses with POR, but POFQ is usually picked up and dropped off first. POR and POFQ offer a boat to DTD, which is cool.
Depending on your budget, you might also consider AKL. My kids loved it, and it would be a fun place for little boys. You might also think about a value if you can stand it
- my DD12 is dying to stay at Pop, but DH won't stay somewhere with double beds, and he likes the serenity of the deluxes and mods. But your kids would probably love it!