Best value for money under $200 would have to be the sunbeam 0480! (rrp $199 but I got mine brought down to $179 from a non sponsor)
You will find this machine at most department or electrical appliance stores ;D
While the 0450 is also good, the manual on/off switch is really handy on the 0480 allowing a more even filling of the basket.
However I believe the internal burrs are the same, just the outer of the cheaper one is plastic not stainless :)