Well, I stopped by at Sprint store and played with both devices again.
Samsung seems just a tad more responsive, but the difference is so small it may be just my imagination.
Samsung actually had better signal than Evo - -78db vs -74db. Again, the difference is pretty marginal.
Evo's screen was noticeably - not a whole lot, but visibly - brighter (both set at max brightness). And it seemed just a tad "crispier" but not by much. I had them side by side running the same webpage (Google Play).
I checked the battery and Evo was at 6 hrs xx min standby at 85%, Samsung at 6 hrs xx min 89%. Again, don't know how significant it is.
Samsung had a deep, long, wavy scratch on screen. How do you ever scratch Gorilla glass ? Somebody must've been busy with their keys
.
I did check the multitasking by opening a SMS, typing a few letters, switching to Contacts, starting a new contact with a few letters, then switching back. Samsung switched back without a problem. Evo re-loaded all from scratch when I used home or back buttons, but kept the text I typed when I used "recent" button. I wish I could see if I could play some music in the background on Evo while typing, but they had no music loaded on either phone. (Can you do it on your Evo ?)
Basically, I think I have my mind set on Evo. I can measurebate both phones for another month, of course, but at this point it seems that they are very close, and I am leaning towards Evo simply because I had nothing but great experience with Touch Pro 2, while I have no experience with Samsung.
ADDED: Just ordered 4G LTE at AmazonWireless.com for $99, no tax, no shipping fee. Can't beat it !