2003 v70 rear end suspension parts - what brands to trust
 

Hello, I could use some help here, would like to have the guys in the forums whom are in the know of brands that are trustworthy for the volvo v70, I have a 2003, and need the rear suspension done asap...the springs are broke/rattling and the other parts for dampening the shocks are most likely failing as well.
So what brands should I use , a local volvo repair shop have me a horrendous parts cost estimate ; like $200 each for shock mount, $304 each for shock absorber, and $534 each for coilsprings !
I can't see where they are getting those costs, but they ARE wiling to put on part I purchase, so some ideas ?