pulling data from MLS via RETS protocol

hi all!

i'm fairly new to Drupal. i'm trying to evaluate if i'm hitting the right road. i want to build a real-estate site with data imported from an MLS using the RETS protocol. so far, i see one module, dRealty IDX, that could be of use but it's still on it's beta release and not advisable for production sites. any thoughts on how could i forgo with this real-estate project? trying my luck.. maybe some of you have inputs for this. thank you! :)