W12 - Phair I climbed about 100 places to number 23 (using only secondary airports)by having over 50 CRJ 100s (mostly LR, but that was overkill, most of my flights around 1000 miles) - afterward a319 (again 75% SR, 25% LR) to keep cost low over rivals. and now a321s, but basically I think the best value for money aircrat are the bombardier CRJ series or the Embraer!s that pop up later on. I will get CRJ 200LRs only to replace my current fleet due to age if I have time If you use secondary aiports the A321 is the largest you can go. My 777300ERs are a lazy choice, but 550 seats from 15mil-5mil airports are overkill. Also the Tu144D is a good way to have regional aircraft up to 4000 miles, not cost effective but mostly competition free as only long range a319 have the range, an I an fly to 3x more destinations. Basically when you a/c count goes beyond a hundred you will escape to the larger, but lower price/yield aircraft due to price competition and lack of time to create scores of new routes.
