I have this one, but I don't hugely recommend it. I mean, it works, It's a little finicky about positioning, and sometimes my phone seems to randomly stop charging. Although that could be my phone rather than the charger.

My mom has this one and loves it. It seems to work much better because of the triple-coil setup. A little pricier, but I'd say it's worth it.

I don't use a case, fwiw.

The T513

The T511

This: http://www.amazon.com/Wireless-Charging-Blackberry-included-coil-black/dp/B00JA7HNZO

Used it with nexus 6 and S6... 3 coils.. Perfect.

This one does from Amazon : http://www.amazon.com/gp/product/B00JA7HNZO/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1

I have it charging daily through a Pt case with no issues. Also has a pretty large "sweet spot", so I basically put the phone centered on the thing and it works perfectly.

With the Duracell one the sweet spot (on mine anyway) even with the case off is ridiculous. 1/4" one way or the other and it doesn't work.

Well, even I like the concept of wireless charging by simply putting the phone on wireless charger and its starts charging instantly. I purchased a wireless charger from Amazon http://www.amazon.com/dp/B00JA7HNZO/ and its working absolutely fine from last 6 months with its three transmitting coils and wide charging base.

I've bought the ChoeTech charger from Amazon after not being impressed with the factory Samsung one. The samsung one would turn off after it reached 100% and never turn on again leaving me with around 80-85% in the morning. Since I got the Choetech one, I wake up to the phone at full charge every morning. Great charger and would definitely recommend.

http://www.amazon.com/Charging-CHOETECH-Stadium-Wireless-Charger/dp/B00JA7HNZO/ref=sr_1_1?ie=UTF8&qid=1442600452&sr=8-1&keywords=choetech+wireless+charger

I got this one for $25-ish and it's worked well. I got the little Yootech but it wouldn't reliably power my Nexus 6, but works great for my watch and somewhat on my Nexus 7.

I got the samsung branded charger when I bought my phone at best buy and didn't like it at all. The charger would register the phone and look like it was charging but when I got up in the morning, the phone would hardly ever be fully charged. I originally had a GS6 Edge and now the Note 5 and neither phone worked very good with the samsung charger. I now have the Choetech wireless charger and it's awesome. It's not the fast version but when I use it at night, it doesn't really matter to me and i always wake up with my phone being at 100% charge.

http://www.amazon.com/Wireless-Charger-Coils-Top-Rated/dp/B00JA7HNZO/ref=sr_1_3?ie=UTF8&qid=1445011288&sr=8-3&keywords=choetech+wireless+charger

I got this one for my Nexus 6 and it had been great! http://www.amazon.com/gp/aw/d/B00JA7HNZO/ref=mp_s_a_1_3?qid=1434931477&sr=8-3&pi=AC_SX200_QL40&keywords=qi+charger&dpPl=1&dpID=31WE9MNpp9L&ref=plSrch

I use this 3 coil pad -

with this case

It works flawlessly .. charges anyway you keep it - unless the phone is literally falling off from the pad...