This product is built upon Nooku Framework which is one of the best development foundation for Joomla I have seen in a long time.
Flavio and Nick are working hard to keep up with the Rapid advancement in Joomla and among the very first to master Joomla 1.7.0 massive changes along with improvements on their own product.
If you don't like frequent improvement updates and willing to accept a few minor problems as Ohanah goes through development, then please wait to buy.
BUT... I strongly recommend buying now and be a part in development of this exciting and clean product. When Ohanah reaches full maturely It will be worth twice it's current price.