AudioLarry

Aloha - just bought a 2006 XA with only 94k miles, in pretty good shape according to my mechanic. Would like some advice on some upgrades:

1. What is the best available cruise control?
Will be commuting 24 miles each way each day and occasional trips to Arizona.

2. Suspension upgrades for a smoother ride?
I'm not interested in low-rider airbags, just a better ride.

3. Best tires for the Southwest?
Almost never encounter snow.

Thanks for any help!