My reciever is a harmon kardon avr 125. I do not have any large retailers that supply speakers that I could take home and audition as I live in a communitity approx. 150 miles from a major centre. I have made a short list of brands and models that I would like pick from. I need some opinions on which one of these choices is best suited to my amp #1-front- Athena ASF2 centre- Athene ASC Rear-Athena ASB2 Sub - Athena AS P400 #2 Front- JBL N38II or ND310II Centre - JBL Centre II Rear-JBL N26II Sub - JBL PB10 #3 Front - Polk R50 or RTi70 Centre- Polk CSi40 Rear- Polk RTi38 Sub - Polk PSW404 Would getting the Polk RTi70 or the JBL ND310 be too much speaker for my amp and damage the amp and or my speakers? Any kind of help suggesting which way to go would be appreciated.