theloudest.com is absolute rubbish you can spend your money far better.
if you think oyumight amp in the future then get components as it gives you more flexibilty with your system design.
as for HU i would still avoid sony they were once a good brand but they dont really do much now.
look at things like the fli or fusion HU`s for budget kt they are surprisingly good for the money
and you dont need to stick to a brand there is no 1 manufacturer that does good everything;)