The current one is a Peter chou in a silverish metal box. Should I just get a similar one or one that looks like this:
Is the Peter Chou one working?? If it is I can't see why you would want to replace it. They're a very good and reliable power supply.
If it isn't working and can't be repaired then the Far East supply you're showing is a good alternative, because they cost very little money.
If the Peter Chou one is dead, then start by sticking an ESR Meter on the caps and seeing if any of them have died.
Best Regards,
Julian (Fozzy The Bear)