I own a Gravity Avenue road bike with 700 x 25 size tires. I am running lite 700 inner tubes with Kenda entry level road tires running 90 psi. I am fed up with the flats on every ride over 5 miles. I live somewhat on the outskirts of a city with many country roads that make riding amazing with the road to my self. I like to bike about 35 plus miles per ride.I cant decide if I should run ultra lite slime tubes or a good set of liners. I am not too worried about weight right now but dont want to carry two bricks along also. What is recommended for my rides?