Is there a particular network that is good in Buriram, we are not sure if there is ant difference or maybee one is better than the other ???????????

There's is no way of telling as it could vary in your particular location. AIS/One2Call is the longest standing company, though I won't use them if I can help it. Usually an uncompetitive system of charges. HappyDprompt offers much better value. 2.5 baht for nationwide calls.

if you want to see area coverage for each provider check out this gsm providers website, it lists all the providers and their coverage maps.