I'm not into flash ones either, with flashing lights and equalises : surrender:
Pioneer do some nice understated DD ones
The DD you linked to is a generic chinese copy that does everything but pretty much all badly...
I poke the hole in the top of the Scotch pies that are sold in the canteen. I know its not the most glamorous job in the world, but its important none the less!
All depends what you poke the hole with
That one looks complete cack mate
If you want all in one you have to spend the cash unfortunately.... I would rather buy a 'decent' HeadUnit without nav than a not so good all in one.....