You're not really comparing like for like, narrow lightweight rims vs wider all purpose rims. Bladed spokes will ride very similarly to round spokes albeit with a very small aero advantage. For the superstar wheels I'm not sure I'd want to use wider than a 25mm tire on a 14mm rim width - as you say the tire will balloon out and that will affect how you feel cornering.
A 17mm internal rim width is likely to ride much better with wider tires - you need to decide what your preference is comfort or weight. Of course you could be making an argument for a brand new lightweight wheelset with a wider rim.