Hi Akitaishi
Mine is the 5146R - rose gold with cream lacquered dial. I love the cream colored dial alot when i was looking for an annual calendar and the classic looks of the 5146, the curvy case and the warm of rose gold of this 5146R won me over.
I got it for Christmas in 2012 (time for an annual review!).
Previous post of this watch here:
It's keeping very accurate time (and moonphase too - my friend with a Langematik perpetual will compare his moonphase with my 5146 every month!)
Not sure i understand your Power reserve question?
It swings to right when power is increasing (from winder, wear or winding) and left when power is being consumerd?
cheers
robin