I totally agree with you on the Sun Sugars. I grew them last year and regret not putting out a Sun Sugar plant this year.

My favorites of 2014 turned out to be two heirlooms that I received from a local breeder friend:

"Garrison" was a red beefsteak tomato that was absolutely fantastic. It is not widely available yet, but I expect that to change as more folks get the opportunity to try it.

"Trees Bottom Yellow" is a large yellow tomato that is perfect for BLTs and burgers. It is sweet tomato with very low acidity. http://www.gardenyeti.com/tomatoes/profile-trees-bottom-yellow-tomato/

Give them a try if you have the chance!