I think Michael is awful, I don't get what the girls see in him at all, not attractive or nice person. I genuinely think all the other boys were shocked at how he spoke to Amber.
I prefer Curtis without Amy, I really don't think he ever fancied her but did like her and got carried away. He seems very attracted to Maura and it makes him more relaxed. He clearly never liked Francesca as he defaulted to Maura the whole time (admittedly could be editing but even Francesca didn't think he liked her either).
Not keen on MM, she seems fake, Anna is nasty, Amber is making the stuff with Michael into huge deal when she should have just moved on but the other girls are partly to blame with that. Anton and Belle will be very volatile I'd imagine, could be a nightmare relationship.
I agree with pp, Chris and Ovie would have been great from the start, they haven't had a great opportunity to find the right girl in there.