I've got a pair of Garmins, a 70DV and a 70S, along with the GVC-10 for side imaging and networking. I've been very happy with them. Accepting a refurb for a warranty replacement always seems like a crap shoot to me. If a customer returned it for intermittent problems, a service tech might not experience them and call it good to go. I understand having a bad taste in your mouth after your problems and wanting to go back to Lowrance. Hope what ever route you go, brings you satisfaction.