Not sure what your budget is...but Cabela's has the Terrova 80 on sale for $1999....that's almost $700 off the regular price. Plus compared to used, you get a warranty. However, I believe it comes with the mini-remote (no LCD screen)..if you don't like it, you can always upgrade later.
You don't see many used Terrova 80's on the market...and if you do they command a premium price.
Mine's been bulletproof, except for a seal incident from my grandkids fishing line...