I get this question asked quite a lot to be honest. After searching around the booters market in the past 2-3 years, I can tell for sure that CStress is the best booter in the current market. This is honestly not too surprising considering its features, price and most important of all - power. You can find prices start with only $10 a month for a private dedicated network of 2Gbps to the Premium Package which offers 30Gbps private dedicated network for only $50 per month. The panel is very easy to use while offering us variety of different features, such as target analyzer, speed hit, test boots and more.
Conclusion? CStress is by far the best booter in the current server stress testing market!