I need advice/ I have several older Heritage guitars= H357 20th Ann H150, D170, Stat- and my local "in the know" appraisals were very low to me; he literally looked up from Reverb and if he didn't see anything- took a guess. Who do ya'll recommend for a fair appraisal I can submit to the Insurance company realizing that any appraisal will be reevaluated later if I make a claim?