So far I'm a little over halfway through getting the whole set. I read a few of FF books when I was a kid and always annoyed my mum by making her take me to a bookshop so I could use my pocket-money to buy a new adventure gamebook. I wanted them all but obviously couldn't afford it so I would spend ages deciding which one to get.
I was definitely more into the Lone Wolf series at the time but I decided to try and collect all of the FF books if I could.
The series came out in a variation of reprint cover editions and the only completely uniform series was the Dragon editions and although there were a few sub formats of the Dragon editions I'm going for a complete set of those in general. The few Zigzag and original covers I have will be sold or swapped.