This subject has been batted about a number of times and, as always, there are some interesting points of view. I am particularly impressed with Dhaynes' comments and agree with them whole-heartedly.
Firstime, one thing I will say to you is that you have chosen some excellent kits and should enjoy very satisfactory results.
I would respectfully have to disagree with my friend Pauls' statement that "it would be hard to argue that 'the best wine' is made from anything but fresh grapes." The accuracy of this statement is highly dependent on the quality of the fresh grapes.
As I have pointed out a number of times times, I have made wine at one time or another from everything (fresh grapes, fresh fruit other than grapes, kits, juice buckets) with the exception of frozen must. Over the years, I have made good and not so good wine from each source. Nothing is a slam dunk and many things can happen along the way.
For me, all things considered, i.e. the quality of the results, the equipment, the expense, the amount of work, the space required, the varieties available, my location, etc., very high quality kits make the most sense. At the same time, I allow that this is "for me" and may not be the same for everyone. To each his (or her) own.