Investors frequently distrust Wall Street analysts and rightfully so. History has shown numerous conflicts of interest where analysts had been incentivized to publish optimistic research in order to cross sell other service lines.Over the years these conflicts of interest have led to new regulations forcing Wall Street to clean up its act - think Reg Fair Disclosure and Sarbanes-Oxley. Individual investors are now less frequently fooled by analysts and investment banks as a result of the regulation improvements.However, analysts are still human and often make stock recommendations off emotional biases. Bearing this in mind, I vetted today’s analyst rating changes (via MarketBeat) and found the top 5 where unbiased fundamental data supported the upgrade / downgrade.Here are the 5 best recommendations supported by finbox.io’s fair value estimates.Best UpgradesSuperior Energy Services (NYSE:SPN) upgraded by Capital One Financial Corp. to overweightcontinue reading here