Okay! I've tried a bunch (sheet masks are my guilty pleasure) but please keep mind just because someone likes a product, it may not work for you.

Leaders: my HGs. Great mask fit and a lot of essence left over. My favorites are AC Clinic, Vita Brightening, and Aquaringer.

Benton Snail Bee: thicker mask, less essence. Great for breakouts. Soothes irritation and my breakouts look better in the morning.

Tosowoong: another great one! I haven't tried a bunch of these yet, but there are great reviews out there.

My Beauty Diary: very popular ones! I haven't tried these yet, but I'm planning to and they're pretty affordable.

My Scheming: very thin masks with a great fit! I haven't used enough to comment on the essence, but these are probably my favorite fit after Leaders. Also very popular, but harder to find online. ABexchange is a great way to try some.

Innisfree: these were pretty unremarkable for me. I would repurchase if at a good price because I like to sheet mask so often.

TonyMoly I'm Real: I didn't care for these. The masks smell very strongly and I don't enjoy wearing them, but YMMV. I got them for a really great price on Amazon.

Etude House I Need You: my favorite of the lower cost masks (TonyMoly, Innisfree, but keep in mind I haven't tried MBD yet). They have a great fit and have a thicker essence so it doesn't run down my face. I really enjoyed the Snail and Olive ones and looking to try more. I also got these for a great price from Amazon.

My advice: try a couple different masks from different lines in case they don't work for you! ABexhange is great for this. And there are way more sheet masks than this, these are just what I've had experience with!