I wouldn't go for the Draytek - haven't actually done the WE version but the 2200usb - the manual was hopeless - out of step with the screen shots, the drivers provided were not up to date and the whole thing was a bit of a nightmare to set up to be honest - good kit but I'm used to Belkin kit which tends to be excellent and on lifetime warranty - have you considered them - they might not have a USB wireless router out yet but I'm sure it's in the pipeline.
I would favour Netgear from the other two options - simply because their kit is solid, simple to use and usually have metal casings, which kind of gives that re-assuring quality aspect to the whole set up.
And I don't think any of these types of routers support a printer - you may need a printer server.
hth
Additional comment - had a look at Belkin - they do have a Wireless DSL router in the pipeline - see
here