if you using presta stems on your tubes you can buy longer ones ,they do come in different lengths . as far as a better tube there isn't one , they all lose air over time . some lose as much as 10 % of they hold over night . let say you start out at 100 psi and by the next day you down to 90 and then the next 81 and so on until the pressure In the tube match the air pressure in the room . This is just a sample to give you the idea how air pressure work . The best thing to do is top off the air before every ride that way you know you are top off .