[UK-CONTEST] Vertical versus Inverted V

[MM0BQI]

I am making some wire antennas for  IOTA this year and not sure what my best bet is for 20m.  Last year I used a rotatable dipole and it worked very well but I will not be taking the big mast or rotator this time.
I can't decide whether to use a quarter wave vertical with the feedpoint at 10m and four radials or an inverted V with the apex at 10m. Would there be much difference between them? Is there a better option?
I have ploughed through the antenna books but can't find a direct comparison anywhere so would appreciate views or experiences.

I am also looking for 50m of 7 way cable suitable for my remote antenna switch, can someone please suggest a suitable source?

Thanks
Jim,  MM0BQI