3D HD Poxy and Jescar Power Lock + Plus are both great products. They're both glossy and extremely easy to work with. I find the Jescar Power Lock + to be more durable and last about 8-12 months. The 3D HD Poxy has a nice darkening effect but last about 3-4 months.
I use Jescar (Menzerna elsewhere) Powerlock and that is my go-to sealant. Love it so much I use no other sealant. I like their Colorlock too (their liquid wax version).