Ok well having experience with both fluval and eheim i would recommend an eheim 2213 or a fluval 206 cant go wrong with either. If pushed into a decision an eheim 2213. Both will be more than adequate. The eheim will come with a spray bar, you have to buy the spray bar seperately with the fluval. The eheim, especially because your in US will probably cost you alittle more so price would probably equal out.
The media you get in either isnt adequate imo. But the fluval pulls it by an inch because bio rings are included with the filter, probably not enough but you can buy more bio rings from fleabay for cheap.
I remember when i was making the same choices and got caught up in a circle on which to buy. And the answer is literally Either. People will stick to what they like and recommend what they have and what works for them.