Which Dahua IPC-HFW4300S to get?

I want to buy Dahua IPC-HFW4300S but found three different variations online and after spending hours online trying to find what are the differences, I am totally confused and lost now. I just want the best one with least problems. Any help would be much appreciated!

Here are three variations and links to product detail page:

1. Dahua IPC-HFW4300S 3MP Eco-Savvy

http://www.amazon.com/Dahua-IPC-HFW4300S-Network-Security-Camera/dp/B00G3K1XC0/ref=sr_1_1?ie=UTF8&qid=1393668620&sr=8-1&keywords=4300s+dahua

$82.12 (from seller named NetView)

This one says to have a Sony Exmor sensor, some say has better quality. But on Dahua official website, it says Aptina sensor. Which one is correct?

http://www.dahuasecurity.com/products/ipc-hfw4300s-398.html

2. Dahua IPC-HFW4300S V2

http://www.amazon.com/Dahua-IPC-HFW4300S-3Megapixel-progressive-Security/dp/B00Q3GKPLO/ref=sr_1_3?m=A1STITYLR3EJP5&s=merchant-items&ie=UTF8&qid=1447973484&sr=1-3

$83.27 (from seller named NetView)

Forum members say this is a cheaper version that use lower quality POE converter (a big rectangular enclosure wrapping around the wires:

viewtopic.php?f=19&t=44877&start=0

3. Dahua IPC-HFW4300SN-0360B

http://www.amazon.com/Dahua-IPC-HFW4300SN-0360B-Network-Bullet-Security/dp/B00RESTD68/ref=sr_1_3?m=A1STITYLR3EJP5&s=merchant-items&ie=UTF8&qid=1447973768&sr=1-3&refinements=p_4%3ADahua

Price: $84.28 (from seller named NetView)

Some say this is the older model that is not Eco-Savvy and uses more power. But description says this one uses the Aptina sensor.

Does anyone know what are the differences between these confusing variation and which one is the latest and greatest? Thank you so much!

Hi!

Don't Buy 4300S-V2! You will be not able to update firmware like on 4300S (V1). Also, this V2 version has an ugly PoE adapter outside the camera!

If you are looking on AliExpress, you will not find V1.. Unfortunately, you will find only V2 with Chinese Firmware and English web interface..