Triangle Heliades & HT setup

This is my 1st post but I have been reading these forums and a few others for the last few months. I am looking for advice/suggestions on my setup.

My current living room is fairly large at 21x13x9ft. My HT setup currently consists of -
Philips DVP642 DVD player
Music server HTPC, all CDs ripped to FLAC
Roku Soundbridge
Yamaha RX-V496 70Wpc HT rcvr
Energy Take5 satellites
Energy EXL-10 subwoofer
Kimber 4PR speaker cables
AudioResearch(or quest) interconnects

The Energy setup while satisfying in previous smaller apartments left me severely wanting in the music area when I wanted to listen to concerts on Rave(Soundstage, Austin City limits) or my CDs from the server.

I decided to replace my satellites with a good set of floorstanding speakers in the range of $1.5K. I researched and demoed a few speakers in December including the B&W 603/604, Rega R5, Paradigm Ref 60 , Gallo Reference & Vandersteen 2Ce. I also read a lot of good stuff about the Triangle Heliade but couldn't find any local dealers in Dallas. I found a dealer in Austin who had a last demo pair. So I had a friend demo them & satisfied that it would be the best match I ordered & received them last week.

Herein lies my predicament - I was not happy with how the speakers sounded. My music tastes are mostly rock(classic, alternative), some classical(western/indian-instrumental) & rarely pure vocals. When I demoed speakers locally, I listened to Pearl Jam, Alan Parsons, Pink Floyd & some Indian-Western Fusion.

On the Heliades, the same music really underwhelmed me. The highs sounded a little harsh, mid-range just ok & bass was very vague(for lack of a better word). I tried concerts recorded in DD5.1 from the dvr & I still wasn't satisfied. The only music which sounded halfway decent was Acoustic ones like Nirvana's Unplugged CD. Upon some further research here & on Audioasylum, it seems that the Triangles are known for being bright & require good tube amplification to sound good. Also, most people buying them like classical & less bass oriented music like blues & jazz.

Now that I have bored you with all the details, I need some help.

- Given my room size & music tastes, are the Triangle's even the right choice?

- If I wanted to drive them with used tube equipment(2-channel amp/integrated amp), how would I integrate them into an HT setup? I also ordered a Noxa Center channel in a haste because the Energy was really mismatched. The Yamaha rcvr has no pre-outs & only external decoder inputs so I cannot just connect a power amp to it.

My options:
# MC preamp with fronts driven by tube/hybrid/ss amp & center/surrounds driven by rcvr. (
# Integrated amp driving Heliades in 2-channel mode & rcvr in HT. (How can I drive speakers with both ?)
# MC preamp/MC amp (expensive, also rears are satellites)
# Good A/V rcvr (don't want to deal with hdmi switching until the whole 1.3 issue is sorted out, might not be good for speakers)

I have a limited budget so I would like to buy used as much as possible. The local audio store has a Rotel RSP 976 AV preamplifier for $300 so I am really considering it.

Again sorry for the really long post but I am in such a fix I feel like selling the speakers & starting fresh in a few months so I would really appreciate some advice.

Thanks,
Srinivas