Hey Cobster are you aware of a "lag" problem on your Vibrant (slight delay in transitions eg. swiping the screen or opening programs)? If you do you should google "samsung vibrant lag fix" and read some more. There is apparently a free app made by one of the xda-developer posters which fixes the problem and making it really really fast. The app is called "RyanZA lagfix" or something like that. You should do the reading about the whole shebang before using it.
I agree the Samsung has excellent hardware - the 1GHz Hummingbird is comparable to the 1GHz Snapdragon, but the real advantage is the graphic chip (GPU) of the Samsung processor. It is a PowerVR SGX540, which is one generation ahead of the SGX530 used in OMAP3XXX, or the Adreno 200 GPU used in Snapdragons. It really boosts the graphics performance when the whole system is running properly (eg. after the lag fix).
I am not bashing your phone, just giving you a tip. In fact I have been thinking about buying a Vibrant in anticipation of the Android 2.2 update (Q1 2011? depends on the carrier). However, I pressed the trigger on a Nexus One (unlocked) instead, simply because of the price (similar to unlocked Captivate; the Vibrant is more expensive!) and because it already has Android 2.2 installed (I think it was unlocked from Videotron in Quebec). There are a few minor quirks with the 2.2 Froyo to be ironed out, but Flash video is working very well (not perfectly eg. not with 360p or higher video, though I am not complaining). I also hear that the Nexus One, being Google's baby (the device is actually made by HTC), will get the Android 2.3 update in Q1 or Q2 of 2011 (while many other Android phones have not even got a 2.2 update!!).
