WILL YOU GET OUT OF HERE YOU MEATHEAD!
.....Just playing my "Archie" along with your title. Great line up of cubs on a great spring day. You have a distinct advantage on troubleshooting problems--you can easily swap parts from one to the other for a quick diagnosis!
I remember reading some literature when I was purchasing my zero turn that said every 4" increase in deck size decreases your mowing time by 20%, so you will want to go with the 42" deck in order to maximize your seat time.
Thanks for sharing your cool pics,
Cub Cadet 123