Sorry , you are missing the question.
If i get a 450 with 2.05 then all is good and I can go CFW but , as you said , this is unlikely on a new retail unit (i.e. will require a lot of work to find one on 2.05)
With a 440 I am guaranteed to be able to go CFW and both units cost the same where I live.
The question is , is it worth looking for a 450 (with 2.05) or should I just get the easier to find 440 ?
My amp has marvel qdeo upscaling , I have no need of dual hdmi output , I don't need analogue outputs. Is there anything else the 450 offers that the 440 does not ?