Solution 1:

Consider the following widely-accepted plural forms of popular Apple products whose names consist of two nouns:

  • Macbook Pros
  • iPod Shuffles
  • iPhone 4s
  • Mac Minis
  • Macbook Airs

Just as one wouldn't say Macbooks Pro, so also one shouldn't say iPods Touch. I would always go with iPod Touches. If that sounds awkward to you, then your better bet would be iPod Touch devices or, best, iPods. Most of the iPods being sold these days are of the Touch variety, anyway. More often than not, one will hear iPod Classic when the distinction wants to be made. Thus, an iPod will usually be an iPod Touch.

Also consider Xbox 360 and Playstation 3. One hears Xbox 360s (not Xboxes 360) and Playstation 3s/PS3s (not Playstations 3). Many technical writers use the words units and devices, or find other means to avoid these potentially sticky "plural" situations altogether.

Solution 2:

According to this Apple support document, they refer to iPod Touches

Removing all your MobileMe Sync Data will remove the data from MobileMe Calendar, MobileMe Contacts, and from any iPhones or iPod touches you are synchronizing via MobileMe over-the-air syncing.