Our entry level Lance came with manual jacks. I remove the jacks for XTC trips and leave them at home to save weight and for wind (and rock) drag mitigation. With heavy home made dually front jack extensions even the manuals get pretty heavy.

I use a powerful cordless drill in low gear on the jacks. But, you must constantly circle the camper inching up the camper one jack at a time to get it up or down. The electric jacks are even heavier and most do not have a removable feature (if that's worth anything to you) without cutting a splicing some plugs for each jack. I'm actually glad I have lighter manual jacks since I remove them for trips anyway. But if you are not strong enough to use the hand crank or electric drill going round and round the camper it might be worth the expense to have electric jacks installed after the fact. Most original manual jacks are not pre wired for electric jacks, to my knowledge, so there is the wiring factor to consider. Basically, you can get used to what ever mode on which you finally decide with the above strength caveat..
Assuming the 8-point position at storage before we had a camper shed:

jefe