Another one who's just started with the OCA. I spent ages dithering, but the upcoming fees hike forced my hand really, but I have to say, I'm glad it did.
I did the OU short course (T198) a few years back which was useful at the time, but it's standalone anddosages you 'hanging' at the end with nowhere else to go. I had been looking around for an A level course, but they're only available on a full time basis around here, so no chance of fitting that in around work / family. Of the rest, despite its cost, the OCA course appears the most comprehensive, long term and recognised, in so far as you get a reasonably transferable qualification out of it.
If you are thinking of going with the OCA though, best if you sign up soon as their fees rise by 62% later this year in line with the other universities, however, fees for current students are somewhat protected for the next 5 years.