Your choices are in separate classes rendering a comparison unfair. Athena can't touch Paradigm's Pure Titanium tweeter or match it's build. A more appropriate comparison is Paradigm's Phantom from the Performance Series, which are just gorgeous looking in their new iteration.
Athena AS-F2.2
Weight: 44 lbs
Width: 9 1/2 in.
Drivers: Dual 8 in.
Crossover: 2 way (both 8 in. handle same frequencies)
Paradigm Monitor 7
Weight: 38 lbs
Width: 7 5/8 in.
Drivers: dual 6 1/2 in.
Crossove: 2 1/2 way (crosses over to special lower frequency driver at 400 Hz)
Notice similar weights even though Athena has dual 8 in. drivers and much larger cabinet. The Paradigm's are only 6 lbs. lighter! Paradigm is a more sophisticated speaker using three specialized drivers and a 2 1/2 way crossover for the various frequencies as opposed to Athena's two respectively, which is why the Paradigm's reach lower despite less surface area.
The Monitor series is a significant step up from the Performance series, less so IMO than from Monitor to Reference Studio. While you may brag Athena's AS-F2.2 is the top of their line, Paradigm's Monitor series (identical performance across the line, differentiated mostly by bandwidth) compete with much more expensive speakers on the market and measure as such.
You're comparison was not a fair one to begin with. Besides, an Athena 5.1 will run almost half a Paradigm Monitor 5.1. I wouldn't venture into Paradigm Reference Studio territory unless you're prepared to shell out some serious dough. The best surround systems have identical drivers all around and you'll pay more than double for a Studio 5.1 than a Monitor 5.1. That's getting into serious high end, which will lead to upgrading everything else and leave you broke!
That being said, if you can find any AS-F2's (the original series) left that were about 40% off, it's a no brainer.

Also, you'll never see Paradigm on sale from a boutique dealer as you might find Athena from Best Buy or Future Shop.
As far as saying one is better music than the other...that's audio mythology. Sound is sound and both reproduce it brilliantly. If others had issues playing music on Monitor Series speakers, it's due to poor set up, room interaction or plain incompetence, not the speaker. They are giant killers and world class music reproducers. There have been many comparisons between Paradigm's PTD tweeter and Scan Speak's Revelator, the latter considered the current world standard. That's what class Monitor speakers compete with.
In the end you still have to listen to them! There's no substitute for spending some qulity time with each and a favourite CD. Happy hunting and tell us what you get!