A. Done your homework reading reviews/forums
Reviews are good only to create a short list. If you can even trust them, they tell you little or nothing about how it will sound with your equipment in your room.
B. Been to a store or a show to hear/see the item in question
This tells you even less, same reasons above. Plus, a good dealer will optimize the equipment choices to show off the component in its best light. This is not a bad thing, but you can then spend a lot of time and money trying to recreate that sound in your room, and may never be able to achieve it.
C. Checked with a local Audiophile club's membership
for opinions/who owns one.
Again, opinions tell you nothing, unless the members are willing to lend you the item.
There is simply no substitute for some form of in home audition.