frankly I don't get the hype about the Blue Tubes effects. They have a decidedly "free" look about them, like they would have lit up the internet 5 years ago. I think it's kind of ridiculous to have half a dozen different EQs which are just rehashings of the same processing, and the other effects too are mostly rendered redundant by Analog Trackbox (which was available for 20 bucks some years ago). The fact that they will likely be unavailable in Sonar X5 or 6 (in the way that several effects have gone missing in X3) is just another blight upon them.
I think the current batch of (actually free) Variety of Sound plugins blows them out of the water. I can't imagine anyone comparing Thrillseeker VLA or Ferric TDS to these Nomad Factory products, who would decide that the Blue Tubes are superior.
I think Addictive Drums is pretty awesome, and it's available in other hosts.
ps, the Reaper VST plugin bundle is actually pretty useful, the EQ can do an all-pass filter (allows you to play with phase) and has a decent notch filter.