About to invest in room treatments; GIK, RealTraps, DIY -- what is your experience?


I'm reaching the point soon where I'll invest in some treatments for my two channel listening room. Standmount speakers with tube amps. Room about 28x14ft with low ceilings, 6.5ft. Probably different kinds of treatments are needed. I'm not exactly sure yet what I'll need or how much to spend. This is not my final listening room, but I won't be able to configure another one for a few years.

I've seen many people tout GIK on this forum and I'm already communicating with them a bit. I will also reach out to Real Traps and possibly others. I do not feel bound to go with just one company or solution, so if you've mixed and matched, I'm curious about that, too.

Any recent comparisons between these two, or others? Do you have stories of good or not so good products or service? Any comments about the value of competing products? I'm not super handy or have a lot of free time, but DIY is also considered. 

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They seem to have helmholz resonators built in as well. That strikes me as a bad but not awful integration idea as the best position of a diffuser and a bass resonator would rarely be the same spot.  Some comments from people with them recently:   https://forum.audiogon.com/discussions/argent-room-lens-2



Oh and they sound much better on Audiopoints after the maker told me they would not..He said to use only, the as supplied carpet gliders..wrong. Couple don't decouple. Tom
Thanks, Erik.

Otherwise, interesting discussion, albeit not what I was asking about.  Helmholtz resonators are not the first thing I'll consider.
If you're looking for the best solution, cost no object, Stillpoints Aperture.

As  @ebm said.