Hi there,
Having not flown CO for around 20 years

I need some help with what plane to choose for an upcoming flight.
Flying in first class, the following operate on the route I am looking at:
LAS-EWR
737-800
737-900
757-300
Any pros/cons, but I am tending towards the 737's are they are much newer than the 757's, but again open to ideas/suggestions/rants/whines/complaints/feedback.
Also any links to menus for the meals in first for breakfast, lunch and dinner, as that may also sway my choice
Thanks