Once again Dominican your logic is questionable.
Its not the size of airplane, its the company thats paying you to fly the airplane. Worldwide Legacy non-contract carriers pay very well to fly small airplanes, and with a good schedule at that. Some even have seniority bidding systems. In these companies its advantageous to fly the small planes because they don't come with the jet lag. Work Monday to Wensday and fly Paris-london-Paris. Air France? BA? KLM? or Any N American carrier (after a few years), Fed EX, UPS, Cathay, Dragon Air...etc. At BA, most of the young ones fly the big ones because pay is the same no matter what you fly. You get increases based on years of service only. This is the best system.
If your in the contract world, paying for ratings or preferrably bonding is a fact of life and a necessary evil to get into whatever airplane you desire to fly.
Moral of the story: Go for the Company, not the airplane, or the SEAT. If your smart you will start that logic young.... if you don't, it will cost you either a pension, or your family.
That said, if you can get a DEC on a 320 at Air Asia AND SURVIVE... then you will be in good shape, but you will probably forever be a contract pilot.