One of the reasons I have stuck with the OcUK forums, despite the very tight rules, is that there are very few spoofers on here. Generally, anyone who says "I've got x or y" and "I've done x or y" will be challenged very quickly so people just don't do it. There are also a large number of early adopters so generally we know up front (often before the reviews) what the kit performs like in OUR hands. There is a certain amount of "buy what I bought" but usually folks are open about their mistakes and keen to stop others following them. Some have become almost evangelical about stopping people buying expensive kit that doesn't actually perform that much better than cheap kit.
Personally, I've bought 26 motherboards in the past 12 months, 14 different types in total. In each case I usually test them and either blow them up or sell them on. That allows me to talk with certainty about certain pieces of equipment because in a funny way I (and other early adopters) are beta testing these devices for everyone else.
I don't think there is any such thing as "posting above one's station". There are a couple of people on here - James32 and Starfall for example - who have low post-counts but who scare the living daylights out of me with their ability to explain why changing a resistor or a capacitor or a BIOS RAM setting has a catastrophic or miraculous effect on performance. Luckily they are willing to share and are tolerant of non-professionals so you don't get a shower of derision if you question them.
8 months ago all the long-term Intel owners were very unhappy with the motherboard manufacturers because if we wanted Core2Duo we had to bin our existing S775 motherboards and buy new ones. Simply because the PWM requirements of the Core2Duo were different. Intel could have kept them the same, but they decided to change. If they decide to do so again, then the best laid plans won't stop them. EVGA are currently biting the bullet and swapping THOUSANDS of 680i motherboards because they sold them on the basis that they would overclock Q and QX processors, but when the Quad-Cores arrived, there was a previously unknown hardware problem that prevented strong overclocking. Kudos to EVGA, but they are the exception, not the rule. We don't know what the next new processors will need and whether or not our current equipment will support them, because we are at the whim of the manufacturers. That's why I say you should buy for your requirements today, not for what you might be able to do tomorrow.
I genuinely hope that in three years you will have the same kit you buy today, I do have my doubts though

. One nice thing is that generally folks on here do tend to stay and build up big post-counts so we can resume this debate in 3 years and see which of us was closest to our stated aims.
And anyway - isn't your real decision between the AB9 QuadGT and the P5B-E rather than the Commando?