No competition here the 300. Nr Fairy is right in a lot of his obsevations. However it is not that much slower than an R 22. 2 pax 49g of fuel 23.5 inchs a good one will cruise comfortably at 80 knts. Can get 85 without much difficulty.
Try and get your hands on a 269B slower than a C but cheaper to hire than even a Robbie , probably find a CB is cheaper too.
Other advantages of a 300 are : They are used all over the world for other purposes other than training. Eg load lifting ( empty weight 1100 lbs maw 2050lbs - so quite useful ) spraying, mustering, aerial photography, law enforcement, survey work etc etc.
An employer would be more interested in hours on type. Having said that you really want to get turbine time to be attractive.
Best of luck.