Time to upgrade - need advice


I currently have a Rotel RC-1070 preamp, Rotel RB-1070 amp, Rotel RC-1055 changer. I can either upgrade the pre to RC-1090 or the amp to RB-1080. Either unit can be had for around $900. Which upgrade would give me the better bang for the buck? The second choice will be upgraded later down the road - 3 months or so.
miner42
What speakers are you using? Amp and speakers is
very important.I have learned that the amp, should
be able to drive and match your speaker nicely, and
without a sweat, I did the pre and cd upgrade before
the amp, I did not get the result I am looking for,
until I replaced the amp.Why dont you try to audition
cdp, and, pre and amp one at a time?This is a lot
of work, but thats the way to do it.
Your speakers are fine and can handle much much higher grade electronics.

An upgrade to me is not just going to a slightly better Rotel. The next step is lower priced gear by major audiophile brands like Conrad Johnson, Blue Circle, McCormick, YBA, Bryston, or higher end Creek, etc, etc, etc.
Thanks for your responses. My budget can not afford $3000 preamps and amps - although I do wish it could. I am looking for solid state vs tubes - just my choice. I don't consider Rotel MidFi - Denon, Pioneer, Marantz, Onkyo, etc is MidFi to me.