Seems to be a lot of unanswered ?s and huge discrepencies about that stinger board claiming to do 200 watts(or 150 or whatever depending on who you ask) and people seeing maybe 60? Read about one case that swung to a whopping 18!
I'd also be concerned about heat being mounted inside the box especially if it ever did do 200 watts.(which I seriously doubt)
I read somewhere of 5 watt carrier? Swinging to 200? I don't think so cuz if it did that surely would sound like ####.
If you want my opinion and you want to do one or the other, stick with the RFX75. Much more realistic numbers and with a 15+ watt carrier swinging to 60-90 or so in most cases depending on the radio, it's much more in line with that 1:4 ratio of good sounding audio. In my case it's 18 carrier swinging to 95 according to Paul's note on my radio when he shipped it.