yes i believe personal pref is key to this decission, bot of my 6ft tanks have 2 fluval 404, no carbon just media and argonite in the baskets, and 2 ac500, with 2 sponges, if i need carbon, i just replace 1 sponge for awhile with carbon. lots of filtration but i have very expensive fish. ive heard nothing but good review on the eheim filters also,
robert