power head

i been wanting an e-tec since they first came out. but have been waiting for them to prove themselves. (+ no $) now i got the cash for the down payment and i dont think i gonna get one, as bad as i want too. i know where 2 are for sale at a very resonable price with 'brand new powerheads'. i have seen several come and go on ebay with 'brand new powerheads'. and a freind of a freind, i was told, got 2 'brand new powerheads' one right after the other on his kenner with twin 150's.
being an omc man all the way its not ez to say this but, i think i will be hanging a yammie on my new transom after i get moved. that or sticking with the old johnny 175 for a while longer. i just afraid that this 'brand new powerhead' is starting to look like a recurring theme.
any body else with an e-tec needed the software update?