I personally am not a fan of the low stretch lines. Low stretch is achieved through pre-stretching. Pre-stretching is great for feeling the drop and for distance casting but you sacrifice abrasion resistance which, when you fish very weedy waters like me, is probs the most important characteristic in a line.
I would stick with the GT-HD tbh. It's a great line for what you're after. It's better than the Touchdown imo.