Thanks for all the replies, really helpful. The SQR slim looks good but from the photos it looks fairly large. @stelfox it's very kind of you to offer a lend of yours but I'm very south! I don't need to take a laptop in with me and it's easy enough to leave a pair of shoes and even some trousers at work. One of the factors is that my commute is about 35km each way and fairly hilly so the less I can get away with carrying the more enjoyable it'll be.
I think I basically just need to think about what I want to be able to carry a bit more before I buy anything!
I've frequently packed mine with everything i needed to work in a garage over winter, with no issue. I've even strapped my laptop to the top on a couple of occasions. The side pockets are useful too. It's a good size but small enough so you can't end up lugging the kitchen sink around with you.
Thanks for all the replies, really helpful. The SQR slim looks good but from the photos it looks fairly large. @stelfox it's very kind of you to offer a lend of yours but I'm very south! I don't need to take a laptop in with me and it's easy enough to leave a pair of shoes and even some trousers at work. One of the factors is that my commute is about 35km each way and fairly hilly so the less I can get away with carrying the more enjoyable it'll be.
I think I basically just need to think about what I want to be able to carry a bit more before I buy anything!