Well, I think I'm ready to take the plunge into the r/c tank world. I'm about 90% certain I'll be buying Tamiya's 1/16 Tiger I full-option kit. It's a pretty big chunk of change, but I've built three of their 1/14 tractor-trailers with full lighting and sound options, so the Tiger should be cheap in comparison to the trucks.

A few questions from those in the know:

1. I assume the respective 1/16 tanks have 'generally' the same performance capabilities/reliability/features, etc. If there are significant differences in the models, how does the Tiger I rate in comparison?

2. What are common failure points?

3. What kind of upgrades would you deem as mandatory to increase reliability?

4. What kind of maintenance is required, and how often?

5. What kind of terrain should you NOT run the tank over?

Thanks to those who take the time to respond.