Al you are right about first impressions. I base a lot on my first impressions and probably maintain[keep] the same impressions after I get to know the instrument or in fact a person....but not always..after you spend more time with an instrument or a person, and get to understand what we were not aware of prior, we can do a 180 from our 1st impression.

I guess, the best thing to do is keep an open mind about everything, give things time, and let our knowledge develop that we will know more about a particular instrument or person....Then we will be prepared to make a final conclusion.