The Tosh is certainly the reviewers fave of the moment.
Regarding the Pioneer, that issue has been seen on a number of their players, although I havent seen any comments on the 350, if you could get a try out with your tele, so you could compare direct, but otherwise do be careful, as there are defiantely some issues with the RGB. If you dont mind using the S Video instead, its no worries.
Definately do not buy a pioneer without a test on your Tele though, otherwise it can be regarded as compatibilty issue, and you may be refused a refund.
Ive now sold my pioneer 444 and porbably going for the Tosh, but I really want a home trial too. Im now quite wary.
Hope that helps, good luck.