All my inline Mls have worn 3x9 or10's,of which have been Elite 3200, 4200, Vari x III and Zeiss Conquest. I still own 3 inlines Rem/Knight both wear 3200 3x9x40's and Savage wears a 3.5x10x44 Zeiss Conquest.

Based on my experience I'd skip the 4200 and buy the 3200 instead if your looking at an elite. You could save a few more bucks for the 3x9x40 Zeiss Conquest (should be able to buy one for less than 100 bucks more than your 300 ceiling.) I have never had an eye relief problem with any inline ML or rifle for that matter. However if you do then cross the elites off the list as they are pretty shy in this department. Zeiss at 4" constant ER is a good one.

Of course you could look at sightron, nikon and leupold as well.

My suggestion is do some side by comparisons in both full and low light conditions then chose which one is best to you.

Best of Luck