I'm very picky when it comes to curry, so here's what I think (this is all my opinion and not that of rlfans)
I gave the one on Manchester road a go and the quality of chicken was very poor.. I ordered a vindaloo and it was like a corma.
3 Sings, good quality chicken, nice and spicy. The sauce reminded me of the one on great horten road next to the Indian working men's club, which by the way is better if you eat in.
Spicy Cottage, a fave of mine.. Good quality chicken . You must eat in though as they take extra time over your food.
Future Bolti, chicken not that good, I got chillies chicken, nice deep flavours.
Mumtaz, QUALITY.. you get what you pay for!