According to the RS website, the Tosh 42WP27B is... "a re- badged Panasonic TH42PW5B, with a slightly different handset" My understanding is that the PW5B is a class B unit. The instruction manual, and RS have confirmed this, states that the Tossh unit is class A. RS have offered to swap out the unit for a 5B (plus the additional £££). 1. Is the 42WP27 class A or B? 2. Should I swap it? 3. Am I worrying too much?