Since you're starting from a nice position (with a top-notch grinder to begin with), you should be able to snag something nice. Refurb/used machines can be found on CoffeeGeek pretty well, but if you don't want to go that route (it's a pretty slow forum) there are a couple of good options out there. If you don't need to steam milk, you're in even better shape. Personally, I'm a fan of the work done over at QuickMill.
The Carola will likely serve all of your needs, has a nice small footprint, can pull a couple of shots in relatively quick succession (though you'd really want a PID if it's going to see heavy use..) and isn't half-bad to look at. It's got a few upgraded bells and whistles and since it's got a nice grouphead you can upgrade anything you see fit along the way. The Silvia isn't bad, but having had a neighbor with one for some time I can tell you the shots are less than consistent as it seems to have a bigger range of pressure than it lets on.