Recommended ZTR

Hello,
I recently moved to a 1.5 acre lot, and I'm looking to upgrade to a ZTR. I'm currently using a 42" Husqvarna YTH2242 lawn tractor. I would like to speed up the job, and better deal with some of the tight turns. I plan to use it in mulching mode. 46" is the max that will fit in my truck bed. There is enough slope in a few areas that causes me to lean to the side to be comfortable in my current tractor. I don't want to buy junk, but I want it to do a good job and last a while. I would like to keep it under $3000 if possible. These are the options I have found in my own research.

Husqvarna Z246 (46") 46" 21.5HP Kawasaki $2,799.99 https://www.powerequipmentdirect.com...er/p50308.html
Husqvarna Z246 (46") 46" 20HP Husqvarna $2,499.99 https://www.powerequipmentdirect.com...er/p73137.html
Cub Cadet RZT L46 46" 23HP Kohler $2,899.99 https://www.powerequipmentdirect.com...er/p15454.html
Cub Cadet RZT LX46 46" 18HP Kawasaki $2,999.99 https://www.powerequipmentdirect.com...er/p73635.html

Any thoughts or advice? Thank you!

Recommended ZTR