My only comment here is that people (even "reasonably objective peers") will almost never tell you anything other than how great your product is. Marketers put

My only comment here is that people (even "reasonably objective peers") will almost never tell you anything other than how great your product is. Marketers put the "success test" on most market research as something called the "top two box" test. That means on your surveys, they like to see 90-95% of feedback in the 9's and 10's (on a 1-10 scale). This is because everybody is always overly enthusiastic on a survey, not wanting to hurt someone's feelings.