I have had amazing results with Wine Kitz in Charlottetown, PE, which recently won "Franchise Partner of the Year"
Like others have said, you get what you pay for in the kits.
I have tried RJS Grand Cru, and Vineco's Kendridge Classic 10L kits compared to Wine Kitz "Traditional Vintage" 10L in the Valpolicella style. WK had much more body then the other 2 brands. Haven't made any 'bigger' kits besides the Wine Kitz ones except for WinExpert SI Chilean Carmenere (which is fantastic)
Wine Kitz only has about 5 product lines vs RJS 14ish.
Country Mist is the 7.5L fruit wine
Wine Art (7.2L) light body red/white
Traditional Vintage (10L) medium body red/white
Ultimate Estate Reserve (17L) full body red/white
Sommelier Reserve (18L) premium red/white
Wine Kitz is a franchise across Canada that has pros/cons. I feel that the quality of service and product is above the industry standard since all stores follow similar regulations, equipment, etc. The other stores around here are a bit outdated with service and equipment. The downfall is that they are not around in as many places as RJS and WinExpert. They have zero distribution in USA so they are the underdogs but they have great wines.