I would not suggest using the BFD for anything other than subwoofer equalization but for that purpose there nothing that can touch it at anywhere near the price. The problem is that using it properly is very labour intensive with lots of measuring and setting filters then measuring and setting filters, etc., etc.
What Room EQ Wizard appears to do is to automate everything (frequency sweep and measurement, analysis, filter setting creation) so that what used to take hours should take minutes.
The program also has a C-weighting compensation setting so that you do not have to modify your RS meter to get a flat response.