My immediate need is getting a new sonar for my boat. However, I would like to have a GPS in the future. <br /><br />Is it worth the money to bite the bullet now and buy a combo GSP & Sonar in the same box? I don't think I have space problem if I buy two separate boxes. Cost wise I can see the different, but I don't know if a combo box perform at the same level as two separate boxes. I would appreciate any feedback that upi may have on the combo.