*Pioneer*
cheapskete OCer, I have a Pioneer Elite 7.1 THX myself. and I love it. Came with a three year warranty. I have heard a lot of good reviews from other people at other Forums on the Pioneer 1015. The one big thing you have to consider is bang for your buck, does it have all the features that are important to you, like does it have enough inputs outputs??? This receiver has MCACC which will make setting it up for surround sound a snap.
If I was buying today and could not afford another Elite I would buy the Pioneer 1015. Take a look at the return policy,so if you are not totally satisfied after you try everything out, you can always take it back.
I have a Paradigm 10" sub and it does the job for me quite nicely, again what I suggest is you try it out with your gear,its too hard to predict how things will sound in your home, your the one who has to be satisfied.Take a look at the specs,that will tell you how low it goes for frequency response.If you have a 6" now and find it low enough then I am sure a 10" will be fine for you.