ISHAN3 I've used both Typinator and Texpander (now TextExpander). TextExpander is not free-it's $30. For that extra $10, though, you get the menubar icon with an extremely convenient list of your shortcuts for "snippets", pictures and the like. I have perhaps 120 shortcuts, many of which I use daily (I know, I'm not very creative, but when you have to say the same thing over and over again, it's hard to stay creative). I can't possibly remember all the shortcuts, but a quick trip to the menubar and I have a complete formatted paragraph immediately pasted into my document. Typinator would be improved with menubar access to shortcuts. Then, it would be a very close race between the two apps.
(Version 1.3)