Replying to Ski bags

What is up NS!?!    So here's the deal: I need a ski bag, and my skis are 181cm long.  The thing is though, I don't know whether I need a padded bag, or just a sleeve.  The padded bags are twice the price but do they make that much of a difference?  I will be flying with the skis and going on a bus trip so would it be stupid to go for a unpadded bag, or does the padding not make that much of a difference?

I don't necessarily need wheels since I'll be packing the rest of my gear in my suitcase.  I just need something to put my skis in so they don't get screwed up in transit.

So what would people recommend?  Padded or unpadded?  Any bags that are particularily good?

THANK YOU