GIK is great for the money. Real traps start getting pricey but they are well built, their web site is worth a visit just for the info on room treatment they provide.
Just start with the mirror points on each side wall between you and the speakers. Second is treatment behind the speakers.
One thing to think about is that you can't EQ bass room nulls, and using an eq to reduce peaks does not sound the same as reducing them with room treatments...a treated room will have faster time response.
So you may want to consider doing a low frequency treatment in corners behind the speakers in addition to the EQ.
Just start with the mirror points on each side wall between you and the speakers. Second is treatment behind the speakers.
One thing to think about is that you can't EQ bass room nulls, and using an eq to reduce peaks does not sound the same as reducing them with room treatments...a treated room will have faster time response.
So you may want to consider doing a low frequency treatment in corners behind the speakers in addition to the EQ.