Funny you posted this as I just got both, and Opti-Seal. I've only used the Opti-Seal and WG Liquid Gloss so far. Liquid Gloss seemed to spread easier and more evenly. With Opti-Seal, it felt like the applicator kept grabbing on dry areas but I didn't have that problem as much with Liquid Gloss. Liquid Gloss has a slight yellow tint to it but I tested it on some white counter top tiles and it appeared to flash clear. LG also smells like Banana. I opened the Crystal Seal just to see the color consistency and smell and it is clear like Opti-Seal and smells kinda like ONRWW (melon). I'll report back once I actually use the BFCS.
Old thread, but since I just used WGDGLS today, i have to say, its hard to beat! I am huge BFCS fan, and I use it all the time, but I am blown away buy WG's gloss factor! Darkens my paint a bit too!
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