Is working very well for me.
I've been using the disposable 3L tape runners for years. Was always afraid to try one of the big ones from other brands because of problems that have been reported. I decided to buy this one because of the brand's reliability. The size of this freaked me out a little at the beginning, but I have gotten used to it pretty quickly. It's very smooth & the tackiness is great. I gave it 4 stars only because I have not replaced the cartridge yet and am not sure how that will go.