After waiting and waiting and waiting for Valentine to come out with a Spectre-proof RD, I bought the STi. I have used both in the past and find an advantage when you have directional arrows that work (most of the time). They claim that they are looking at the problem but cannot allude to any time frame.
Now that Beltronics has captured this market, I cannot see how Valentine will have enough units out there to sustain R&D against Spectre. (They will remain a good non-Spectre RD.)
No regrets! My Bels in the past have done me well in the past and this forum indicates that the STi performs very well. So...I'm back in the Beltronics camp!