It is a common mistake to get hung up on Watts.......the robustness of the power supply is much more important ie. The ability to supply current as impedance drops is far more important - and Electros do this very well, being stable down to 0.5 Ohm!
ECI-3
Peak Current....60Amps
70W @ 8 Ohms
120W @ 4 Ohms
160W @ 2 Ohms
This amp is a great choice and will drive the speakers.
PI-2
This amp is a little more powerful and a similar price, but is (slightly) less smooth and chocolatey sounding. http://www.electrocompaniet.com/products/prelude/PI-2.html
FWIW. I would go with the ECI-3 with the Veneres, as they are more "modern" sounding than SFs of old (Toy / Cremona)
Three hybrid amps that are worth considering: UR Unico, Pathos Classic One and AA Verdi Cento....of those, I think I would pick the Pathos.
Class A: Don't rule out the Sugden A21 SE, which sounds more powerful then the watts suggest and will also be wonderful with SF (probably would be my pick, but I'm a sucker for Class A). http://www.6moons.com/audioreviews/sugden/sugden.html and http://www.precide.ch/test/sugden/e_HIFI_WORLD_MAY05_SUGDEN_A21SE.PDF and http://www.uhfmag.com/Issue85/UHF85.pdf and http://www.canhifi.com/Resources/UserManualEntity/FileName/a21se_review.pdf
Try and get to hear some of these, as I hate being the arbitor of someone else's preference...though I feel very confident that your key to Nirvana lies within these brands.