M22 is a bookshelf, and the M60 is a tower speaker.. but, any good receiver pushing at least 75-80 watts per channel, will push those 60's plenty hard.. it really depends on your budget.
the HK's have a tendency to be a lower wattage rating than most receivers, but it is widely considered that they under-cut the wattage on their specs, and that a 60-70 watt HK is just as powerful as any other 70-80 watt receiver.
here are some brands and models to start your search
Onkyo 501, 601, 701
Denon 1604, 1804, 2803, 2804
HK 300 and 400 series
Yamaha 400, 500, 600 series..
i am not sure on the 'actual' model numbers on the HK and yamaha, but go to their websites and it is fairly easy to navigate.
bigjohn
