I'm contemplating buying a tiller/cultivator to aid in preparing garden beds each year. I've found the brand I want and now need to choose between two models. They are both electric, one is 6 amps the other 9 amps. One has 4 tines while the other has 6 tines. One weighs 14 pounds and the other weighs 17 pounds. They both have a 7 inch cultivating depth while one has a 14 inch cultivating width and the other has an 18 inch cultivating width. One has rear wheels while the other does not. One is $40 more than the other.
Here's a comparison chart I made:
(I noticed I erroneously switched the weights of each. The 6 amp is 14 pounds and the 9 amp is 17 pounds.)
6 amp model
9 amp model
Questions:
Is the difference in amps, number of tines, weight, rear wheels and cultivating width worth the additional $40 plus shipping?
How much difference in performance will there be with the higher amps and higher number of tines?
How much difference in performance will the back wheels give?
Which one will be easier and more controllable to use in several 36" high raised beds that are 5 ft x 10 ft?
Which one will be easier and more controllable in hard virgin ground with sandy dirt that needs peat moss and manure tilled into it to improve the soil?
I'm leaning toward the 9 amp model with the rear wheels but am questioning whether the smaller model will be more helpful in the raised beds. Tilling the virgin beds will be a one-time thing while tilling the soil in the raised vegetable beds will be a semi-annual thing.
Any advice?