A rumor leaked out today suggests that Acer's plan for Android tablets may include a trio of Android 3.0-based models but that it's sitting on the fence with doubts about how it should enter the market. The Taiwan company is purportedly making five-inch, seven-inch and 10-inch tablets that would all use Google's next OS but DigiTimes said it's still deciding on whether or not it should use Qualcomm's Snapdragon or a dual-core NVIDIA Tegra 2, even with just a few months left to go. Part suppliers suggest Acer is even undecided on its choice of main contractor and has