Scotty's are a no brainer, call repair shops and ask what downrigger they see the least...
I did alot of research before buying (3) 1105 scotty's. Almost every shop I talked to said if ya buy Penn or Canon Electrics, buy an extra because of shop time. Now this is all hear say, but I'v had mine for 3 years and used them 2 years strait (all three of them) and logged 130 days fishing with them each of the two years. Never had a mechanical problem and they never failed in any way. Only problems is me hanging my balls on the bottom too close and hanging them up. (boy that waters cold). anyway call Johns in Everett or Narrows Marine, they both repair all makes.
Hope this helps.
Oh buy the way look into buying them at Barry's bait and tackle just north o the border. You wont believe there price on Scotty's.
Hope this helps

Bob D.