I've been using the Rimowa Salsa Air 33L for about 2 years and I would estimate 250 flights. The reasons that I bought it:
- Fits easily into the overhead bins on regional jets like the CRJ700 and Q400
- Great multi-wheel rolling
- Hard case
- Internal netting
Overall I've been really pleased with it. It is generally my 3-4 day bag which is the majority of my trips. I was a little concerned about having only a single pole handle being beefy enough but it has held up quite well. I use a Tom Bihn Ristretto for computer/personal bag so I don't need the double pole handle to attach my laptop bag.