Hey Bendogo,
My apologies, when i read your post, I interpreted it wrong and saw Monitor 7's and didn't realize you were referring to your Sub 8 and was thinking you had Monitor 7 speakers and why I went the direction I did, so again sorry if I got you off track.
With your existing speakers, you're definitely due for those first and can ignore my amp update recommendation. Any of our great dealer partners can show you how that will work and what to expect down the road.
I'm certainly biased toward Prestige, and again, any of our good dealers can give you a compelling demo to show you how good those are.
I always encourage anyone in here to reach out to our dealers who can inspire, work with, and and support you.
Again, I'm sorry I misinterpreted your original post and got sideways on this, but if I can be of any further help, please don't hesitate to message me here.
Cheers.