what is your go to bag? I just got a few LV bags that I love, but I feel funny using them in that scenario, not to mention, worried that I'll ruin them...so I go and grab my $30 Lands End tote that is so durable and which I don't care if anything happens to it. But I'd like a middle ground...because it's so easy to carry a bag like that (big, pockets, durable, comfortable, light, etc.), it's hard to switch back to my nicer ones sometime! What would you choose?