Now using TextExpander on the MacBook Pro. I prefer it to ActiveWords on the PC, though ActiveWords is more versatile, TextExpander is simpler and does the job with elegance. I just wish the export of the list to the iPad was more complete. It works but there is a problem with the capitlisation.
Interestingly TextExpander advises the use of double letters at the start for abbreviations. tthu for Thursday etc. I prefer thuu that way I can start each word as I would normally, and not need to think as fast.