I just wanted to say that in the past couple of years I never bothered to install WiiFlow on my system
I was actually satisfied with CFG and later with USB GX that I never felt the urge to try yet another Loader.
However.....I tried it yesterday out of curiosity and I'm so glad I did !
Really, functionality wise I don't see any huge difference from the other Loaders, however I had a big problem with my Toshiba Canvio 500GB USB 2.0/3.0, namely I had to unplug it every time I started the other loaders or between games, otherwise my Wii would freeze or keep looking for the HDD.
I'm happy to report, that with WiiFlow there is no such a problem
It seems that the games take a few seconds more to boot ( and it's alittle bit of a hit and miss ) , but the Wii doesn't freeze upon initializing the HDD anymore !
That's a huge plus in my book, and reason enough to switch over from anything else.
Maybe there is a different call in the way the HDD initializing is handled, after all, Wii Explorer always finds my HDD as well.
Oh, let me add that I'm using d2x-v9-beta(r49), with v8 final Wiiflow would boot but freeze before loading a game.
Maybe somebody should edit the Wiki page regarding HDD compatibility and add this info, I'm sure there are quite a few people with the same problem out there.
Hope it helps.
Cheers