3 and 5 stand out to me as well, but I like them all as a series.
The only nit would be that 3 has much brighter whites than the others.
If you were to display them together it would be good to give them all the same tone as a unifying theme.
4 and 5 seem to be toned.
Could just be my monitor though.
Beautiful series. I also like 3 & 5, but #2 also stands out to me. I think #5 is a special photo that stands out on its own and would make an excellent gallery piece. Extremely well composed.
I particularly like the field series (images 1, 2 and 5) a lot. Excellent in terms of perspective and use of lines and /or repeating patterns. The bold contrasting and lighting contribute, too, to the mood.