You brought up a few more points that I did not think of! One of which was in "Patriots" video comparison, there was NOT much difference. So, when I get my "New" TK-75 tomorrow, like you said, it will be even closer in comparison which I mentioned several posts ago.
I also like your point about the battery pack.
I look forward to when "Patriot", "Subwoofer" or someone else does a review of the TK-75 VS. the RC-40.
Lastly, your point along with one of my main reasons for choosing the "New" TK-75 instead, and that is the weight and bulkiness of the RC-40! Even if my Siberian was not using my left Arm, because of all the reasons aforementioned, do not think I would want it instead of the TK-75!
Finally, I would like to "strike that from the record", when I said a few posts ago that I would eventually get the RC-40!!!
Ciao,,Roberto,,,,"Capo di Capo"