I purchased a Salsa Deluxe IATA multiwheel in early January and have used it extensively... I'm converted to Rimowa for the forseaable future by this experience.

I am thinking about getting two more pieces - a business trolley/multiwheel and a 26" check in.

1) Is the business trolley or multiwheel more practical? It seems that people prefer the trolley in this size (though I love the multiwheel action on my Salsa Deluxe)

2) Should I get an aluminimum model (Topas or even the new Classic Flight) for the 26" model? Is there a long term benefit over the Salsa Deluxe polycarbonate?

Thanks