By "gotten the bonus", do you mean got the Sin-Spins?
You have to "save up" souls to get the Sin-Spins, which is a bit of a bummer as they can often take many 100s of spins to collect.
But by far the worst thing about this slot, is that if you run out of funds and have to leave the slot - all your souls are lost after 48 hours!
Relic Raiders has a similarly unfair time-out rule too.
Personally I am disgusted that the otherwise excellent NetEnt platform has such player-unfriendly slots.
(What happens to the RTP of the lost icons???)
Anyway, to the original question, my favourite casinos & some of my favourite slots (too many to list them all):
MG = Ladbrokes; Scoop the Cash, Untamed Giant Panda, Moonshine, Tomb Raider 1 and 2, Loaded, Fat Lady Sings, The Osbournes, etc.. And in the Games Section: Casper's Mystery Mirror & War of the Worlds.
NetEnt = Betsson, Casino Euro, RedBet, Come On!, Casino Luck, Vera & John (no favourites as such - I play all of them): Jack Hammer 2, Zombies, Jack & the Beanstalk, StarBurst, Frankenstein, Evolution, Crazy 60s.
3Dice = 3Dice: Fortune Falls, Slotronomicon, Coral Clams.
Rival = Slots Capital, Tropica, Vegas Sky: A Switch in Time, Hole in Won, Baby Boomer's, Best of Luck, Five Reel Bingo, Reel Party, Travel Bug.
Grand Virtual = Imperial: Atlantis, Cactus Jack, Eureka!, Jackhammer Jackpot, Olympians, Petshop Payout, Pinball.
KK
I checked up Devils Delight again just now. Ive never gotten the sin spins, just the ordinary bonus & free spins.
Maybe ill try it some more. Sounds a bit interesting with the sin spins.
Im still not used to sorting the casinos/slots after the game brand, like MG & NetEnt etc... maybe in time.
Ive played in most if not all of those casinos & also the slots. I dont recognize the names of the slots from Grand Virtual though. Ill take a look.