Was chatting to some pretty experienced airline pilots down at the European sim hangar the last coupla weeks and the general concencus was that the device is not an issue when it comes to the MCC. Aside from the valuable course content you're just learning some old company SOP's which probably have significant differences to what you might experience from a future employer so just do it cheap and have done with it.
Spending £3000 on a full motion jet sim may be useful if you have an interview lined up the following week as you'll be able to sneak in some practice handling the big stuff but that's about the only advantage the guys I spoke to could see and they really knew about all this stuff so........ just passing it on guys.
VFE.