Back in 2010 we looked hard at the 4000 when we stepped up from a LR60.
We ultimately bought a CL300 due to op-cost, bigger cabin, mx, avionics-pkg. Proline 21 with 10x12 inch screens vs. Epic with 8x10 inch screens, etc...
The Hawker had the range advantage about 300 more miles VFR but that's about all it had over the CL300...
Climbing at 1200+ fpm while closing in on FL410 at mid weights is nice...
Some folks complain about the noisy cabin of the 300, but to me its no noisier that any other Challenger I've flown...
But if you're asking for study guides I assume y'all already have one or its arrival is imminent.