I love using TextExpander. I use it everyday for all manner of things. It's not completely invaluable but it's certainly very helpful. Their recent change to a subscription model hasn't went down well with many users of their software including myself.
I use TextExpander almost daily, but I also use Todoist on a daily basis. My Todoist premium subscription is $22 per year. Very cheap for all the little extras I enjoy from Todoist and I don't grudge Todoist the money.
I love paying for the software that I use but I simply can't justify the $5 per month (or the $40 per year) that Smile Software are looking for to sync snippets that I use on a single device. I'd like to be wrong, but I think that Smile have just priced their product out of the market.
I may continue to use TextExpander without upgrading but I think in time I'll end up moving to something else.
Since reading more about the TextExpander 6 launch, a number of people have pointed out security concerns with a key logging app that syncs all your snippets to Smile's servers without being encrypted. Another valid argument against upgrading to TextExpander 6 then.