Depends on what your needs are I guess. Look at VIR
for example, ordering the new A380. I know SIA will fly theirs first, but as of yet no one has it in service. Yet Branson has ordered it anyway. That'll give him the 380, 346 and 744, together with the 343. What a fleet! I guess you either want the fleet with the hugest airliners, carrying the most PAX, or are a relatively new airline ordering something that has established itself over the years... such as the 737 or 320.
EOS1D4, 7D, 30D, 100-400/4.5-5.6 L IS USM, 70-200/2.8 L IS2 USM, 17-40 f4 L USM, 24-105 f4 L IS USM, 85 f1.8 USM