Try Lebelage sheet masks m0gz here. I've tried the egg, aloe, snail and royal jelly ones. All are soothing, helped with the lurvely hormonal outbreak the other week.
The egg one I used last night made me itch though, but that was more than likely because of the cleansing lotion already irritating. It didn't the other two times 
The 69p savers 'radiate & bright' or something like that is alright for the money (I'll check the name next time I nip upstairs). The brightening is only temporary but definitely there.
I like the Innisfree Manuka honey too - smells like honey and very soothing.
I have a 3 pack of Vanedo Beauty Friends snail ones on their way, they were £1.93 ish. They haven't arrived yet so I have no idea what they're like.
This nature republic shea butter one is up at the top end of what I'm comfortable spending on a single mask I think (but I haven't tried anything more expensive yet). It was lovely though - the essence is more of a lotion, it smells beautiful, & it moisturised really really well.
& I don't rate the Superdrug own ones so far - but have only tried the one at the mo, I have another two as they were on 3for2. I'll report back on the others as I try them.
(I bet this is epic!
)