Preamp selection advice for rock music.

I am seeking the collective wisdom of the Gon experts.
I do not have the ability to A/B my picks or to audition
them in my system. I am fairly new to this hobby too.
I have an Audio Aero Prima CDP feeding into a Rotel 1066
prepro. The amp is also a Rotel, model 1095, that is going
to JM Lab Electra 926 Speakers. I have the CDP connected to
the prepro through the multi input so as to avoid the Rotel
DAC's. Not sure if this has an affect on the signal.
I like to listen to classic rock mostly and am looking for
a preamp that will help some of the 'HOT' recordings sound
listenable. Mostly helping with simbalance of the recordings
from Led Zepplin, The Doors and etc. I enjoy the detail and
extension that the Audio Aero CDP gives me along with the
expanded sound stage and would prefer to keep these features. The tubes in the CDP helped some but I think that
a tubed preamp would probably do even more and help with the musicality as well.
The two preamp choices that I have made are the Cary SLP
88 and the Conrad Johnson PV10BL. They are available here
on the gon for about $1000.00 and that would be my price
limit, new or used. I also would like to keep an eye to the future upgrade of my amp the next time upgradeitis rears its
ugly head ! Does it ever end ?
Any other suggestions would also be welcomed. HELP !!!