I have only played on MG slots and have tried a few so I'll give my 0.60p input ....
Slots I avoid
Mad Hatter - Didn't do it for me. Didn't actually lose much didn't win much but did about 200-300 spins at 0.60p and nothing magical happened. I personally find the slot theme too bright and childish and I felt like I was not long off having a seizure when watching the symbols change.
Battlestar Galatica - I find this slot confusing. I remember getting some bonus random things happening that looked so fancy but did absolutely nothing. Also got some mode where it pays both left and right but during that mode did not win a thing. Also did about 200-300 spins before I switched. In my opinion if you like flashy fancy slots with flashy fancy features but little to no satisfying rewards then it might be the slot for you. There are much better options if tv series/movies are your theme (i.e Tomb Raider, Jurassic Park)
Terminator 2 - Color theme is dull in my opinion though I guess terminator 2 was a bleak dystopia. I did get the free spin after about 50 spins but left after as the game just felt depressing for a slot.
Immortal Romance (when on a losing streak) - Yes best to just avoid immortal romance if your balance is low. This is my favourite slot when its HOT but one of my least favourite when its not, which is about 8/10 times. I feel other times I can get alot of play time even on low balance (thunderstruck 2, playboy) but not this slot when its cold it should be renamed dead romance.
Break Da Bank Again - I read up about peoples favourite slot and this came up on or near the top so I tried it a few times. Did play it on and off for about a month (most have done about 1000+ spins all up at 0.18 to 0.27p a spin) and all I can say is whenever I hit the bonus feature ... NOTHING. I know its a high variance slot but hitting big wins in the other slots I regularly play (immortal romance,thunderstruck 2, tomb raider, jurassic park) feels so much more easier than here. I do not recall anything decent in terms of wins on this slot at all. I'm sure other people's experiences are different to mine but the only reason I'd play this slot is because you can go ultra low roller on 0.09p a spin, although I get this feeling that I'd never win on this slot ever and that makes me not play it anymore.
Slots I like
Froot Loot - Don't care what people think this was my favourite slot for awhile. No bonus spins, no 1 million ways to win, no guy jumping on the screen every now and then to fill it up with useless wilds its just the simplicity that I like. Before I knew anything about slots I chose to play this as my first one because it was straightforward. What you see is what you win no need to do anything other than change the coin domination. For awhile (like 2-3 months) I was well on top regularly hitting 3 x watermelon, 2 x fruit basket and 3 x bars (1,2 and 3 variety). I haven't won anything from this slot in awhile now though (went from froot loot to no loot) but I when I was still playing (on a break now) I used to play 0.50p-1.50p and its supposedly low variance so I'd get decent game time on a $50 deposit. I'd admit its a boring slot if you went from something like immortal romance/thunderstruck 2/jurassic park to this but if you go the other way you'd probably appreciate how standard and simple this slot is. I like the fact that when you hit something nice its just like any other win on this slot and theres no flashy BIG WIN money flying around the screen thing happening or some sort of 10 minute celebration video clip.
Immortal Romance when its hot - When its hot its great
This is probably my favourite video slot just something about it when its hot makes it feel good to play. Too bad its cold for me about 80% of the time. I admit this slot has sucked my money dry a few times yet I keep going back to it for some reason, probably because the aesthetics are really well done for a slot.
Tomb Raider - Have had nice wins on this but the free spins are only at x3 but feels like its more common than other high variance slots. Its a pity 32red
only had as the minimum 0.75p bet (the other place I played spin palace had 0.30p or so) but I like this slot because it has nice simple bonus features and free spins also.
Thunderstruck 2 - Its an OK slot I guess. Would be nice if they had bonus feature other than wildstorm which for me has done absolutely nothing.
Just my thoughts I'm sure for some the slots I hate are those that they like and vice versa but can only speak from playing experience and to date this has been my experience!