I have also heard good things about BJCON - although I attend UMSL we did many of our clinicals at BJH (also worked as a tech there for about a year) and many of their techs attend BJCON. Everyone says it's difficult, but a fantastic program.
I believe credits from BJCON are transferable (probably much easier than, say Sanford Brown), but it is always a good idea to check around to other schools
to be 100% sure. BJCON also offer a lot of MSN degrees for different specialities, so you could always go back for the MSN there if that is one of your career objectives.
The only negative I can think of is that the tuition is steep. However, if you work part-time as a tech at a BJC facility while attending school, they will give you $4500 per year toward tuition/books with minimal time commitment.