I read the article and well, yes and no with how big a letter can be made on the C personal and create. with the Gypsy (okay more of an investment but all Cricuteers are doing it), you CAN get the full 6 inches and if you don't mind having tall and thin, a close 12x6 letter can be done. The 5 1/2 lock is to allow the user to have enough room for the shadow feature which sometimes is not necessary or wanted. For scrapping purposes, 12x12 is the largest one would go. Why would you want a bigger letter?
I'll be honest, I will eventually get an Expressions, till then I'm happy with my Personal and plan on keeping it unless I find a budding scrapper who needs one desperately.
Sorry for the blah, blah but had to give an opinion and a thought.