Hey all! I am (hopefully, I find out in march) going to be on OA trail crew next year. I am deciding between the ULA Ohm and the Circuit. For the last 5 years (ever since my first trip, when I was 10) I have been using a 2,150 cube pack, and have gone on 4 day trips with it, no problem. So i'm finally going to upgrade. Do you think that the Ohm would be big enough, or should I just go with the Circuit? Im leaning towards the Circuit because it has a frame, wich I believe I would need, but i'm still not convinced. Any advise is very much appreciated!