I graduated from backpack to Topeka rack trunk a couple years ago and loved it. Now that I'm taking grad classes in the evenings a few nights a week, I found that I needed a little more room for books and tablet PC plus regular work stuff, so I now use the pair of Axiom Casals panniers I had around for other types of riding.the Topeka trunks are nice though. I still use mine on some weekend rides when I want a few snacks, drinks, and tools with me but don't feel like rearranging my panniers. I'll probably return to it when I have a lighter load to carry. I did find the space limited for grocery runs, but if I knew ahead of time I needed to stop I'd just throw my empty panniers on the front rack and have them ready to go when I stopped at the store on the way home. Hope you enjoy your trunk as much as I did mine!