These are usually posts from current owners talking about what they like/dislike or posts from people who are shopping like you-- and often you will find them comparing these receiver to other products in the same price range. If you come across a new product mentioned in your range, add it to your list and do a search on it. Add to your notes the issues raised in the comparisons.
By the time you're done, it might take and hour or three, you will have a nice list of every product in your price range, and probably a good list of features and pros/cons for each-- and probably some links on where to buy and where to get the best price. You will have compiled your own research, and will very confident in your decision!
Leave the search on the FASTEST setting, as this will yield only recent posts (you can change it to slower if you don't find many returns)-- and you should have plenty of info if you take the time to read everything that comes back.
I've done this using this forum several times- and once I narrow it down to 2-3 choices- then i might start searching the web for reviews to make the final decision-- but I can usually get a much better idea from the people who use the product everyday than i can from a reviewer who's site/mag is supported by ads from the manufacturer.
But start with the Vince technique of research listed above, I'll be you'll be surprised what you'll find with a little homework!
Another tip is to consider used. Buying from an established memeber on this forum will often give you serious bang for the buck (We all keep our gear in top shape, and we upgrade at the drop of a hat- meaning there is a big market here of 1-2 year old products in excellent shape at cut rate prices). Check out the Hardware for sale area here.