I will use whatever system I think suits the setting and style of the game most effectively, but for each individual system, I tend to pick an edition I like best. Beyond appropriateness, I’m crazy about trying new systems. I’ll often set up one-shots or miniseries as an excuse to try out a new system that’s been exciting me, and I’m slowly establishing an extensive library of rulebooks.

.0-.1 = edition orthodox
.2-.3 = edition monogamous
.4-.6 = edition curious
.7-.9 = edition promiscuous.

As far as the descriptions go, similar to the system descriptions, except:
Orthodox — One edition and one edition only. There can be only one.
Monogamous — I’ll change editions, but only when I have to do so, and I’ll be kicking and screaming.
Curious — Hey…I prefer 3E, but I’m willing to experiment…I have fond memories for 1st edition, after all….but that’s it, mister! No 2E or 4E for me!
Promiscuous — As long as there’s dice involved and someone brings pizza, I’ll play whatever you’ve got.

Myself? I’m probably a 5.3 or 5.4.

I love fantasy, but I’ve enjoyed a littel sci-fi, superhero, and a dab of horror in my time. I certainly have my favorite editions, but I’m willing to move between a couple editions per system.

Personally, I will try anything, but whether I *stick* with it is another question. I’ve picked up a few indies in the past few years, trying to find something that would do some of the things I wanted and do them well, and I’ve found most wanting. The games I’ve stuck with longest have been Storyteller and D&D in all it’s various forms (although my group is only going to get into 4e in a few months when out current 3.5 game closes).

Now I do like to play my campaigns out using only a single system, but I also like to run multiple campaigns concurrently.

Mostly, it’s a lot of 1′s in separate settings. Once I play one game in a setting or genre, I am reluctant to move on from there. Once I started fantasy in AD&D, I tried but didn’t adopt any other fantasy games.

But there was a time I was different: back when I first started playing with my buddies, we toyed with Gamma World, Traveler and (gasp!) TMNT. While on hiatus from D&D the group I played with was strictly GURPS.

In retrospect, I’d probably like to be a 6 or a 7, but the realities of life don’t allow for it: my fellow players in the area aren’t interested in the investment (time and money) to learn new systems. D&D is comfortable and accessible. It has its flaws, but a game is a game — you take what you can get.

Sometimes the assumed play style of a new game is so different that you’re not playing the game– you’re just playing the closest approximation you can given what you and the group understand. It can be particularly hard when the new system upends an assumption of the games that you usually play and only one or two people know the rules enough to get that.

I’d probably be an “8″ on the scale. I’m willing to try almost anything new as a player, and I just need to understand the system and like the setting/premise to try and run it. Time is hardest commodity. Do I have the time to learn something new?

In my mind a “10″ will try anything, even if it isn’t all that great. I’d give myself a “9″ but there are some game systems I just can’t get my head around. Burning Wheel left me with a nosebleed, even though some of the concepts sounded interesting. Universalis just gave me a big headache once we got past the fun of creating the setting.

It can be hard to change systems though when you have been using D&D in some form or another for over twenty seven years.