The McDermott 1x1 in Grey Vinyl. This was my "first" case and one of my all time favorites. Soft and plush inside and fairly plain outside. Mine had no strap on it so true to my nature I modified it by sewing one on. Today, this case is available in many versions and many brands, some good and some not so good.
Now, since I am working for Sterling Gaming, the makers of Fury Cues, this week - hint, blatant ad

) I will give you a link to an online store where their cases are available. Here is a version of that great McDermott Case,
http://www.cuesight.com/sts2k4.html and here you will find many more versions
http://www.cuesight.com/pool-cue-cases-sterling-lightweight-cases.html
Otherwise, if you were lucky enough to find one and wanted to spend the money, I designed a killer soft case for Instroke that used to sell for $250 in leather. It was based on the McDermott case with some "improvements". I have one left with my name on it - I almost sold it two days ago but I think I'll keep it. The small number of people, relatively, who have these are usually really happy with them and tend to not want to sell.
I would look at Silver Fox, which has some nice cases. I personally have a few issues with the design on some of them but in total they are very, very good cases.
Good luck, and don't ever drop your keys in the case, I did inadvertently and spent a hundred on a locksmith only to find them in the case two months later

)
Keep shootin straight,
John