I took the plunge on a Rockwell 6S a few months back, I don't know about best but it certainly became my daily driver after my first use. Best is personal preference but speaking for myself I would be inclined to say yes.
It's a very good shaver and for me I find it tames almost every blade I have tried, even Feathers which usually tear me up are smooth shavers. For the price it is excellent value for a stainless steel razor.
I tend to use it between setting 2-4 for daily use. Though all settings give a comfortable shave, something I can't say for many adjustable razors. I personally prefer a mild shave. Had zero issues using this razor.
Since I bought this razor, I have used it every day bar last weekend (ikon X3 & 102) and my enjoyment of it has caused me to this my collection down from 30+ just under 10, just can't see myself reaching for many because of the 6S.
I would highly recommend it if you are looking for something of good quality and value, should last a long time and if you don't get on with it, you can easily sell it on.