Lemme start off by saying that I love this question haha, and I'll be more than happy to give you my opinion (given I was in the exact same situation).
I myself got an iPad 2 a while back and along with having an iPhone 3GS, I have barely been using my 2nd gen. 16GB iPod Touch. I am moving to Europe without the iPhone so that is why I had and iPhone and iPod Touch (for those wondering). The ONLY thing that the iPod Touch can do that the iPad cannot, is: fit in your pocket. Why have 2 exact same devices, in 2 different sizes obviously, that essentially do the exact same thing?
You said it yourself that you don't NEED the iPod Touch so why not save your money? I sold my iPod Touch to my 10 year old sister for $110 bucks and got myself a Graphite 8GB Nano for $109 plus CA tax on eBay from (Macmall is the seller so I still get my year warranty

) I couldn't be happier with the Nano, it clips on anywhere, it's small and lightweight, does exactly what I need it for and nothing more (music player, everything else I have iPad and iMac), looks AMAZING, and I saved myself a bunch of money rather than getting a new iPod Touch. The OS is very easy to get used to, and contrary to what some reviews say, I really like it! The new "double-tap home button to either play/pause music, or skip to next track" is a great feature in the new software update, especially if you're driving or something and don't want to fuss around with the touchscreen. Take it from someone who had the iPad+iPod Touch and iPad+iPod Nano, I love the switch and I wish I would have done this ages ago...
Interestingly enough, the Nano has a few things that the Touch cannot do. I really hope you bite on the Nano!
Btw, would you mind sharing where you got these good deals? Thanks!