Which 7.1 speakers to choose

[crytklmass]

Well im still trying to decide which speakers to add to my theater/music system.
I have decided I will be moving up north. The basement is Approx. 1600 sq. ft. 10 foot ceilings. It is unfinished and I'll be creating a dedicated room throughout the winter. You can view my signature and see what I already have. I wanted to add 2 more speakers for the 7.1 system and fill. I was going to purchase 805's but don't want to commit that much money for something im not sure I will enjoy or get alot of use of. I thought of buying some DS3 N.I.B. for approx. $700.00 DS7 approx. $1700.00. I really wanted to keep it under $1,000.00 just in case Im not happy with the end result. It will be much easier on my checkbook and easier to sell. I thought the Mono/Dipole option may fill in more sound area vs. standard speakers that require proper direction. Just not sure how the 600 series would sound (match) with my 800 series although I do have a pair of SCM1 (not scms) which sound fine as rears. I was considering my new set for side mounting.
Any thoughts or suggestions?
P.S. I just seen a pair of SCM1's sell on ebay for $1100.00 If I could sell mine for that I could buy 4 DS3's for matching side and rears. *just a thought*

[crytklmass]

Well, I got a great deal I couldnt refuse on a pair of DS7's I know they may not match like the scms or a full size 803s but for $300 I'll give it a try.