I haven't used an HTC since having the Thunderbolt as my first HTC experience, and it was the first 4G on VZW......what a disaster that phone was as I am sure many of you can attest too.
I have used Samsung ever since that phone.....and I do also agree that the removable battery is a must and should be in all phones.....example, prior to getting my Note 4, I was using a Note 2 and the battery was dying long before I was ready to upgrade to Note 4, so I bought a new battery popped it in and good as new! Now when my hubby's Note 2 (that he is still using) battery goes bad, he can put that one in his phone.
And finally, SPEN, SPEN, SPEN, LOVE IT and my NOTE 4!!! Enough said! LOL