Vandersteen 5a, 15 years old vs. new Vandersteen Quatro Wood (upgrade or downgrade)


I currently have a Vandersteen 5A purchased about 15 years ago in great condition. My  equipment  is Thor 150 watt  tube EL-34 monoblocks with a Thor linestage, Sony SACD player and a middle of the road VPI turntable. Was reading about the Vandersteen Quatro Wood CT which I believe retails for $15,000.00. The wood has the carbon tweeter, my 5A's do not. The Quatro also has a 250 watt amplifier for the built in sub while my 5A's have a 400 watt amp.  If I purchased a new Quatro Wood and sold my 5a's would the resulting sound be better overall in my 8 1/2 by 15 foot room?
 My rationale for considering this upgrade, is that I would be getting a speaker with all new parts and would obtain a new warranty.  Any thoughts would be helpful.  In short is todays' Quatro Wood CT a better sounding speaker than my old 5A?  Would this change be an upgrade and would it yield an improvement in sound to justify the cost?

Thank you. 

M

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@gdnrbob I made the change when I changed from SE amplifier to balanced so I cannot make an exact comparison for you. I sold my filters when I got the M7 amplifier which has built in high pass. I think Johnny R could comment on a direct comparison between the 5 and 7 filters or give RV a call. I chatted briefly with him today - he picks up the phone!!!

new builds of the 7 filter include Fire Audioquest wire.
@tomic601 ,
I asked Johnny, but he didn’t seem to think the 7’s would make a difference with my Treo’s.
But, I may have misinterpreted him.
Bob
@tomic601 Been a while but I'll talk with JR, sure. Now he did have the option of selling me the M7 high pass when I bought it and he didn't, so I suspect he'll say it's not worth it. Yes, the sound in that room is phenomenal. I went to another dealer the other day to purchase something JR doesn't carry and the sound was nothing like the system he put together for me. I do wish the system got a wee bit louder for action movies and such, but it is one of the best systems I've ever heard for listening to music and ***it's all mine*** bwa ha ha ha. 
How wonderful to hear this :-) enjoy the music !!!!! Say hello to Johnny for me
Jim
BTW just drove 1,300 miles to hear a pair of 7’s ( mine )... ha, big fun

geace, peace and health to all