Is it worth upgrading to the 4g ipod touch if you have a 3g ipod touch?

I have had my ipod touch 3g since last december and I think the camera along with other features is cool. I like the camera because the device is more mobile than most cameras and has a pretty decent quality. What do you recommend?Is it worth upgrading to the 4g ipod touch if you have a 3g ipod touch?
I would recommend you to buy New Apple iPod touch (4th Generation) NEWEST MODEL



Pros:

1.Wi-Fi capable Facetime (video chat with no 3G)

2.Game Center (challenge your friends play games and so much more)

3.About 50% thinner (0.28in;7.2mm)

4.Apple A4 processor chip faster than ever)

5.HD video recording

6.Retina Display (Pixels at 78 micrometers wide packing 326 pixels per inch)

7.Voice Control ( control your music with your voice)

8.iBooks (your own personal bookstore and reader)

9.iMovie (movie editing program redesigned for ipod touch)

10.Multitasking (Switch instantly between your favorite apps)

11.Folders (Make more room on your home screens for you favorite apps)



Cons:

1)More expensive than the last gen

2)Not out yet

http://www.amazon.com/gp/feature.html/re鈥?/a>



Also check out at Ebay

http://rover.ebay.com/rover/1/711-53200-鈥?/a>