Yes, it's an excellent brand, and probably one of the most common from what I've read. Others swear by 3M and Formula One. Once you get to the higher end tints, I don't think you'll ever tell much of a difference. As long as it continues to look good, and has a lifetime warranty, that's all you need.
I just had 28% LLUMAR installed all around and its very good although probably not the best. Tinting place told me they have alot of trouble with area around the defroster wires. They are thicker than most cars they clain.
That's true about the lines. Everyone I know has this problem. Solutions are either to sand them down before application or to get a guitar pick or something similar and press them down once the tint has had time to set. They should get better over time anyway.