Back to one of our favorite topics: bags!

When I travel, I generally have a few things that can't be taken through the TSA checkpoint: a knife, for example, and the kit. I used to just check everything except for my laptop and some personal items. That means paying at least $50 extra each trip, but I thought it was worth having my gear with me in an unfamiliar place.

On this last trip, a trip I took for work, the airline misplaced my luggage, and I ended up without my work clothes (suit, shoes, tie, etc.). It was seriously inconvenient. So now I'm thinking I need another bag when I do air travel. That makes three bags: the checked bag with my gear, the carry on bag with my work clothes, and the laptop bag.

What bags do you recommend? It needs to be small enough to be a carry on. It needs to carry a suit without wrinkling it. I need to be able to lug it around with two additional bags -- in other words, something convenient.