I just started posting here and I have to say the prefitteds ROCK!!!! I love them!
When my son was a newbie, I used regular CPFs. Then he started the Crocidile Death Roll... and I needed to slap a diaper on him fast. I use them under Baby Soft Wraps and Mother-ease covers. I have also used them under Prowraps and BSWWs. They are trim, trim, trim, contain the nasty teething poops, slap on fast, go off fast, dry quickly and wash easily.
I like that they have a little extra "bling" and her prints are wonderful! I just ordered two with fabric on them. I normally hate hinding pretty fitteds under covers, like why bother with the extra $$$ if no one is going to see it, but these have enough color to give me my pretty diapers without my husband moaning that I spent $$$ on dipes no one is going to see.
So, YES they are worth the extra $3! Heck, they are worth an extra 20, IMO!