Hi all, I'm looking for a receiver to be used with my Axiom m2i's but will also be used later for surround sound.

I've been looking at these one's so far:

Harman Kardon AVR225
Harman Kardon AVR130
Onkyo SR501
Pioneer D812K

I like the AVR130 and Onkyo because they have a variable crossover. I like the style of the AVR225 but it has a fixed crossover of 100hz. Isn't that a litte to high? Is there much of a difference between 100hz and 80hz? I'd prefer to get either the Onkyo or the Pioneer because I can get them from the store I work at for a discount. I can also get the AVR130 for a discount, but I'd have to order online. I'm trying to keep it around $200. Right now I have a cheap Pioneer VXX-108. It doesn't even have Dolby Digital.