You're thinking of the Grow Design Works Flag. Their G-Flag gill glide is good too, but are a little pricey and hard to come by for someone just jumping in.
Osakana Slide would definitely be his best best as far as price and availability. There's also the Megabass Ayu Twitcher, which I didn't personally care for. Still haven't tried the Berkley Chop Block, but it at least seems to be better than the Nessie.
Another favorite of mine is the Skinner Baits Clide, it's line through and can be run completely weedless with a BKK Titanrider. Also made of silicone so holds up great. Really the most unique one on the market. It is extremely premium starting at $120 each, if you catch a drop haha