i haven't taken a classroom course before but had some private tutoring so far, which were very good (yet quite expensive!)
then i tried the knewton course for a few sessions and didn't like it one bit
less than a month after my free trial period ended and they saw i didn't buy in, i got from them an email offering me the course for only $599 instead of $1390 (but only if i upgrade until the end of the week)
i'd like to know: did anyone here start the knewton program thinking it's not that good and later changed their mind (after paying and getting the full material)? if so, what exactly caused the change?
i wouldn't pay $1390 for it, but if i get enough strong indications that after the free trial things improve there, i will consider paying the $599.
in any case, you may want to try your luck not upgrading your free trial straight away and waiting a couple weeks to get the same $599 offer.