best gear ratio for my setup

Just today I went and picked up my 4.30 from the trans/gear shop.
I also have 3.23 in the car now.
So I have a 3.23 which are too high for around town, and a 4.30 which is a too low to run on the highway.
Figure out what you can tolerate on the roads you will be driving on, tire size is crutial, but a 3.55 is a real nice compromise gear.