It would have to be my 5300 with the extension floor that was bought for me by my parents as a birthday and christmas present (they are 3 days appart) then each member of my family gave me a different room set. Somewhere there is a video of my three year old (very nearly 4!) uncovering it on christmas morning. My mum being the organised person she is had already built it and hidden it at our neighbours!
Since then I have purchased more mansions but
'mine' is still my favourite in fact it has never been dismantled since my mum first constructed it-that is my one rule..I will try my hardest to make sure it is never dismantled, I don't know why
but I suspect it will cause problems when I move out!
naflibomyalp