budget power options


Hi all,
I need some guidance to better power my Amphion Argon 3's. I currently have a Peachtree decco65 which I like for the flexibility to play multiple formats, but I have a feeling it's a bit underpowered. Room is 10'x14' and the speakers are on Sound Anchors stands, the speakers sound lovely but I'm not so sure I'm getting as much as I could with my current integrated. Does it make good sense to add a power amp to the Decco65 like a Parasound a23 or other nicely priced amp and utilize the pre of the Peachtree, or do I just replace it with something like a current Hegel 160. Thanks for the help.
128x128csbushover
Thanks all for the input.
Zd542, you ask a great question and my only answer is that I don't think anything is wrong at all. I'd like to get a fuller sound at lower volume and was thinking it was a power related thing. I'll experiment with low risk option first and learn along the way. Thanks again for all the amp options.
It took a little time to finally make a decision on "budget" power options, but now I am the proud owner of a used Job 225 ! My belly hurts and my neck is sore, this little amp delivers a soundstage and fullness that makes me wonder, how is this possible for such a small box ? I'm enjoying this extraordinary upgrade immensely, a new preamp is next. 
Tortuga LDRX, Audible Illusions LII, Job Pre2 ? must have a remote.

Thanks all,
Chris