You can proud with your camera , your neighbor is a great man and would be a good photographer or someone who knows the hardware part of this art. Minolta have always close ties with the German Leitz and Leica always supported their optical designs. If I am not wrong Leica R3 and R4 bodies manufactured by them also. You have a hardware which you dont need to look elsewhere for a long time.
Its summer at there and you can shot excellent concert hall pictures to ship pictures at harbour with your 400 mm without handshake.

Welcome to APUG from Istanbul.
I agree with Molli , bring your pictures with you and let him discuss them.