I'm looking at getting some 1/24 (IR) VsTanks for my sons and I but I have a few questions about them.

1. I'm not looking for anything super fancy for us, but are these tanks of a fairly decent quality?

2. Do I need to buy different model tanks to have them fight each other with the infrared (i.e. only one M1A1, one T72, etc)?

3. Do they use standard 27MHz crystals (I have a bunch around form RTRs.

4. Are there any models that is should look for or not buy (I'm looking to get them from Tower Hobbies)?

5. Is there another manufacturer that makes a better IR tank that I should look at instead?

Thanks in advance for any info and advice!!