Bass traps - too many choices!!


Browsed the forum and read a lot regarding bass traps. But overwhelming and still not sure what to buy. Looked at the ASC site; and their tube traps are tuned to different frequencies. eBay sells foam wedges which are advertised as corner bass traps. Relatively inexpensive too. But are they effective? I've also heard about using sand-filled cardboard tubes (used for pouring concrete). Even heard that a large potted plant set in the corner can be an effective bass trap.
Can anyone simplify this? I already have Room Tunes in my corners. Speakers are on the diagonal as my listening room is kinda squarish. So I'm just looking to put a bass trap in the corner behind and between the two speakers. But I want to make sure that whatever I buy is effective. 

rockyboy
Slaw, thAnks for the suggestion. I think I have a handle on most everything. I'm just lacking a low freq. bass trap in the corner between my speakers. I have someone coming over next week who will help identify what frequencies need taming. Will try to go the DIY route if at all possible. 
Good luck rockyboy. If you have the tools, as any DIY'er does, you shouldn't have much problem. Look at the Vicoustic, and copy it. I did find it very effective. I did the same years ago with the Per Madsen record racks, got the measurements, made my own.
Everything I make tends to look like a third grade shop project, but doesn't stop me from trying.
Yesterday made cable elevators from small 6" high easels purchased at Michaels (bought 15 @ $1.27ea)!  They were already 60% off and I had a 20% coupon. Sanded the fru fru side edges straight, sanded notches on top to hold the cable (made risers to accommodate two cables and risers for only one cable), and sprayed them black, and they look pretty nice.  I think any third grader would be very impressed with my results!
Highly recommended solution for anyone wanting inexpensive cable risers.

Nothing wrong with DIY!

As I progress in age, I find that people smarter than me, develope items I find interesting and obtainable. I'm at the stage in my life where, I can see the benefit of purchasing said items, auditioning them, then, if I like, I then duplicate them, as opposed to trying, on the fly, to replicate or develop something "unknown". To me, this is the smart way to go as a DIY'er.

I will say, I own Ready Acoustic products that I've modified. After receiving the Vicoustic, .....(NIGHT & DAY) difference!

Take this as you may. I would not write this if I did not feel that, more money spent, (wisely), upfront, will result in more satisfaction for years to come.

I'm feeling a kinship.
My first DIY audio project was an equipment rack out of different sized dowels. ( This was of course, before I knew anything about vibration/resonance's effect on what we hear in the end.) I still have it, by the way. Maybe as a reminder, somehow?

Cheers!