I don't think your amp or any of your system is at fault, you are just ready to step up from the Vandersteens for sure. The Vadersteens are great, but slamming dynamics are not thier strong suite.
I'd skip on the Dunlavy reccomendation as well. I've owned those for years and they just don't resolve enough or put out enough bass to justify those huge coffins in your room. They don't do bass anywhere near as good as the little VR4Jrs
You will love the VR4Jrs I'm sure of it. I own a pair of them and a pair of the 4SRS. They love power like you have and will drop right into your current system like a dream. They will play loud and clear the bass is awesomely tuneful and tight, maybe not the final word in low extension, but really really satisfying. If you gotta have more bass get the SRs, but they may not be worth it, the super duper value is in the JRs for around 2500 used. If you have the system for them (good powered amp (and a good one too) great preamp and source) they are AWESOME speakers, but again they will reveal everything about the system. Placement isn't to tough and they are very small for the full sound they make. They don't have a humongously tall soundstage if that matters to you, and they sound superb out of the sweet spot as well as in it.
Good luck and feel free to hit me up with any questions you may have.
Ryan
I'd skip on the Dunlavy reccomendation as well. I've owned those for years and they just don't resolve enough or put out enough bass to justify those huge coffins in your room. They don't do bass anywhere near as good as the little VR4Jrs
You will love the VR4Jrs I'm sure of it. I own a pair of them and a pair of the 4SRS. They love power like you have and will drop right into your current system like a dream. They will play loud and clear the bass is awesomely tuneful and tight, maybe not the final word in low extension, but really really satisfying. If you gotta have more bass get the SRs, but they may not be worth it, the super duper value is in the JRs for around 2500 used. If you have the system for them (good powered amp (and a good one too) great preamp and source) they are AWESOME speakers, but again they will reveal everything about the system. Placement isn't to tough and they are very small for the full sound they make. They don't have a humongously tall soundstage if that matters to you, and they sound superb out of the sweet spot as well as in it.
Good luck and feel free to hit me up with any questions you may have.
Ryan