Howdy.....please help if you can. I am considering upgrading my speakers to the following: 170se's for L/R mains, 340se for center and 200's for surrounds. I currently have JBL "Northridge" E30's for mains, EC35 for center and a pair of Velodyne CT-41 satelite's for surrounds. I am for the most part very happy with my current set up, but am feeling the bite from the upgrade bug again!! If I do decide to upgrade, I have pretty much decided on the Ascends. Have some questions tho

1. Are the 170's sensitive to placement or are they pretty forgiving (off axis)?
2. Will the 200's still be considered a timbre match with the SE line?
3. How much of a difference do you think I will notice between the Ascends and my current set up?

I can't help but think I am missing something with the JBL's and that something will be heard with the Ascends. Also, I plan on using a Pioneer VSX-1014tx receiver and may dump my Velodyne CHT-10 sub for a SVS PB10 sub.

Thanx Gov