Hey--
I picked up a Real Traps booth a few weeks ago. It's the same price as the Reflexion Filter, but a lot bigger, so I'm using it very very successfully when miking an AC30 and a JC120 with figure 8 ribbon mics in bad-sounding rooms. Some folks say the fact that the SE product is rounded off in the rear makes a difference for reflections, but I haven't noticed any unwanted room tone in my vox or guitars at all with the Real Trap.
BTW, if you're wondering -- I have no association with Real Traps!!! I'm not writing this for anything in exchange! The gentleman that took my order, one of the owners of the company, was very nice over the phone. I was very grateful that he sent my booth in less than 24 hours following my order, via FedEx, at a relatively cheap shipping rate. This kind of service deserves a hearty thanks.
Jim B.