What's the price difference? I'll preface this by saying I've only been in the Tower and not stayed in it, but I might be inclined to go standard or preferred room in the "regular" sections of CSR. The Tower is nice and feels like luxury, especially at the moderate level. But CSR is a convention resort and I believe convention attendees will be placed in the Tower in most cases. The rooms and amenities of the Tower cater to adults and business travelers. On the one hand, it probably means the rooms and hallways are quiet. But on the other hand, you'll be surrounded by business folk. This is one of the very few cons of CSR for us - I travel for work, so seeing everyone with lanyards and working on laptops reminds me of work back home and bursts my Disney bubble a bit. Its a different atmosphere when you're amongst people forced to be there for work as opposed to like-minded vacationing families.
We've stayed a CSR a few times and have booked preferred, which puts us in Casitas 1, 2, or 3. Still a quick and easy walk to El Centro, and close to Bus Stop 2 which is the first pick up and first drop off for the parks (second for Disney Springs routes).