Some of the things you mention are interesting. So far I've had 5 tractors, and here's my opinion:
Cruise Control - Three of the tractors had this, and I've only used it (OK, MISUSED) it on one tractor. It was an act that would draw way too much comment to even mention it here. Suffice it to say I pulled it off without getting injured. Still wouldn't pay any extra money on it.
Telescoping 3 Point Arms - Only my
L4240 has them and they are truly handy.
SSQA Loader - Again, only the
L4240 is equipped with them. This was an option that never appealed to me. Lo and behold, one of the first projects was an 8' power angle snow plow. Guess who is now a believer in QA loaders. I already have a few more ideas for QA projects. It was fortunate that the tractor also came with the third function valve. Made it simple to do the power angling.
3 Speed HST - Three of the tractors have had 3 ranges and that would be a minimum requirement in my book. The
L4240 also has HI and LO shift on the fly in each range. Love that. There really is a range for every purpose.
Take some time and don't rush. The last time I was in the market for a tractor, I spent a fair amount of time getting the feel of different controls. Some had loader controls that made it very difficult to maintain the bucket in a level position while lifting. Some had transmissions with a strange feel. There were differences in turning radius. The seats on two models wouldn't slide back far enough to be comfortable.