I have tested them all and bought quite a few as you can see below
My rating is as follows
1st - Nextgen: It has everything i need EXCEPT the OPML import but i have solved that from Feedly desktop. It's quick, reasonably customizable and really has all what i have been ranting about all the others.
2nd - Flux: i like it despite its dev being slow with updates and not keeping up with promises. Anyway it has bugs with read content (keeps showing even if it should disappear) and has another few flaws that make it unusable in MRT etc.
3rd - Weaver: I like the UI. Unfortunately adding threads one by one without any chance to import OPML and the fact it keeps crashing while organizing feeds makes me use it less than i would like to
4th - I am with Fuse. It has that Pulse feeling that i love. However again organizing feeds is a mess and lacks things i need.
5th - Collector. It's a gorgeous concept but it's incomplete and with rare updates.
I have tried literally all others too and, to me (it means for my needs), none worked. One is boring, another is buggy, another one is lacking key functions etc. What i use mostly is Nextgen (bought it after extensive testing).