Aftermarket Head unit question

Im not a fan of OEM head units even in this prius v

Any one install a pioneer dvd system in it .. reason i ask

im guessing we loose the Energy monitor and other features by using an after market unit?

I dont care for the Nav.. it sucks.. Tom Tom and Garmin and Navigon are much better and have live updates/traffic


Id leave the stock in if there was another double din to install aftermarket pioneer dvd LOL