Is the Aisin transmission worth it?

I think both transmissions will handle your load, but the Aisin will last longer before needing repair or rebuild. If you turn over vehicles while still covered under warranty, this will not be a concern. The down side to the Aisin is initial cost, more frequent maintenance and heavier transmission weight.

If you don't like what is currently in dealer inventory, you can always order what you want and get only the options you feel are worth the price verses what someone else spec's out in a build. Since I keep vehicles over ten years, I prefer to own one that is suited for my use and do not look at resale when choosing options.