ICE is a totally different art compare to home-audio. Home-audio very simple like you buy the max within your budget & install it in a square quiet air-cond room using book-shelf or floor-standing speakers depending on your 'taste' of sound. ICE setup 1st you will need to specify type of car, enclosure type for sub in relation to boot space, hardware you have or plan to purchase & the type of music you frequently listen to. If you can't make up yur mind as the above than just plonk a system between $1,200 to $1,800 for a semua-boleh system which will compromise most music.

Have to check with my 'hairy' friend here whose walking on '4' name Pluto, get back to you later.

My opinion on this is if it's for a limited budget setup(below $1.2K), HU will not have much audible difference if you purchase entry level 'Branded' sets below $450, unless you want an option for future upgrades.