I have been with T-Mobile, since 1999. should i change? why?

T-Mobile has been my cellphone carrier, since 1999. i cannot say a bad word against T-Mobile. we are about No. 3 on their senority list and treat us accordingly for our loyalty to the company. the news. that T-Mobile is grasping for air in the money department, has me wondering if i should think about changing to someone else? Question: if T-Mobile teams up with Verizon and Nextel, what if any, advantages will i receive in this merger?