If I'm not mistaken the manual in the CK2510 is not a shuttle shift, meaning you will have to actually select the reverse gear (like the standard transmission in a car), I have the Max shuttle shift, and I do allot of Grapple and Loader work, love the thing. But I understand why the majority prefer HST.
If I have to decide between a 2 range HST and a 8x8 Shuttle, I'll go with the Shuttle.
I can be extra precise using the Low range and 1st or 2nd gear.
You will also feel the difference in power between the shuttle and HST, specially in low HP machines.
Try both and get to your own conclusions.
There are also other models you might want to consider, if you can/want.
Massey Ferguson 1526
LS XJ2025
Branson 2510h -I almost got of those, it has every single feature you want in a tractor this size.
Yanmar SA324/SA424
TYM 234
Have fun with your research.
Do you have to stop the tractor when you shift between any of the gears or can you keep moving and shift from 1-2-3-4? How many hours have you put on your Max so far? Any issues, major, minor, or nagging?