Pioneer is the way to go imo,
as long as you buy one of the higher end models.
They will give you more control over the sound and also have better features.
Just so you know,
the 7-Band EQ IS
necessary if you really want a decent amount of control over your music.
When I bought mine, the higher end HU's were the Pioneer "Premier" models.
(I'm not sure if those are still available though, at least not in 2010)
They had a 2 year warranty instead of just 1 year.
They included all the needed cables for the USB and Ipod connections.
And at the time, they also had the better pre-outs.
Even though I personally like Pioneer,
I'm not to happy with their choice of now having the USB input in the front,
rather than in the back, like they did in years past.
There's just no option to hide your wires anymore.
To some, that's not a big deal.....
but I run all my music through a HDD that I mounted in the glove box,
so that IS important to me.
If that's also important to you,
I suggest you find a 2008-2009 Pioneer Premier HU.
(Yes, new ones are still floating around on the net.)
You'll have 1-2 rear mounted USB ports along with all the other goodies.
The quality and functionality of a high end 2010 model is still there,
it just won't have the current casing.
Best of luck.