iPad or econobox PC value equation for K-5

I like how lowendmac.com does a mac abc 2010 value equation story so in that vein.

Low-end PC from major vendor education site:

• 512 MB RAM
• Vista
• 120 GB Hard drive
• $379
  

When we configure the machine into a usable form that might last 4 - 6 years:

• 2GB RAM
• Windows 7 HP 64-bit
  
• 120 GB Hard drive
• $588

What else this PC might need:

• Windows 7 maintenance
• Software lic. cost install & maintenance
• 400W power supply
• Giant footprint in crowded classroom
  
• LCD monitor purchase/replacement $129.00
  
• 1/120 slice of 20 hour/week IT support**
  

Lets look at the lowest end iPad:

• 16GB
• WiFi
• $499

and for the iPad

• AppStore
• 2W??
• built in screen
• touch interface
• 1.1 lbs
  
• Self serve
• iTunes gift cards