Congratulations on owning a pair of 7Ts. I've listened to those on several occasions and they are the only speakers that would have me replacing my Aerial Model 8s.
My recommendation is to get a pair of monoblocks that are rated at a higher power level than the speakers.
When I auditioned my Model 8s (100W @ 8 ohms minimum, 500W @ 8 ohms maximum) I did so using a Vincent SV-236MK tube/hybrid integrated amplifier (150W @ 8 ohms, 250W @ 4 ohms) and while I knew I'd want more power, the Vincent did a decent job of driving them. The only real issue was that the bass wasn't really on par with what the speakers could produce with that amp although that wasn't clear to me at the time. There were a couple of other issues to consider and work out but all in all, the Model 8s sounded great during the audition at the store. It was clear, however, that more power was needed.
More on the audition and comparison with some Vienna Acoustics Straus speakers can be found here:
http://audiokarma.org/forums/index.php?threads/used-speaker-audition.559330/
I purchased the Model 8s a week or so after the initial audition.
My front speaker amplifiers at the time were powerful but, and I will confess to having purchased these without hearing them, the quality wasn't there. So an amplifier upgrade was in order, as well as some new cabling to take advantage of the bi-wire connections on the Model 8s.
I talked with Michael Kelly at Aerial Acoustics and we discussed the amplification issue. I also asked him about bi-wire cables vs. using the factory jumper plates. He said that if I had the power that a bi-wire arrangement would be preferred and that I should use the 4 ohm taps with that cable to bring out the bass from the 10" woofers in the lower 61 liter cabinet. He said he was not concerned with amplifiers that exceeded the speaker specs. Rather, he encouraged it and told me I'd realize why once I started listening. Wise man, that Michael Kelly fella.
After I took delivery of the Model 8s, I powered them with the incumbent monoblocks and that cemented my intent to upgrade those amplifiers and give my system an upgrade. I was contemplating an incremental amplifier, preamp, tuner, digital system upgrade and I chose a pair of McIntosh MC501 monoblock amplifiiers to power the Model 8s and I added some Acoustiz Zen Satori bi-wired cables plugged into the 4 ohm tap at the amplifier end. I couldn't be happier with the pairing. Again, it was one of those purchases made without an audition but for some reason I felt pretty confident about the upgrade. Initially, I began to question myself on my decision but it all turned out in the end. Here's the link to the MC501 setup and review:
http://audiokarma.org/forums/index.php?threads/a-mcintosh-mc501-review.635470/
So while some would consider the amplifier specification to be a bit of overkill, I'm a firm believer in giving Aerial Acoustic speakers more power than specified, which has been validated by the designer/builder recommendation and by my own personal experience.
Good luck with your amplifier choice. If you have any questions about what I did and why just post up here or PM me. I'll be glad to help where I can.