The first (white) edition of the Show Stable, because it brings back a lot of memories. As a child, I envied the one the kids next door had. It was all the more serious because they did horrid things to their ponies, like cutting their mouths open. Likewise, the stable had its parts lost, stickers scribbled on and such. My ponies were my treasures and I took good care of them. I so wished I could rescue the stable and it would become a home for my ponies!
Later, I was able to get one for myself with a few accessories and its original box. What bothered me was that it was incomplete and finding the missing accessories seemed tedious. Soon after, I went on a lengthy hiatus from all things MLP that lasted until last year, when I decided to sell (another) part of my collection. Back then, the stable was to go. Luckily, nobody wanted it.
I have been able to complete it since - only the purple ribbon is missing. White jump with yellow bar? Check. Bedcover? Check. Heart-shaped brush with strap? Check. Granted, it's a very common playset and mine is not in the mintest condition possible, but I don't think I'm ever going to give it up. After all, it's a childhood dream fulfilled and has survived many ups and downs.