Hello guys, I want to know what the main differences are between the xterminator rtr and the pro? I am in the market of getting one but not sure which one to get. I have seen an rtr version and hobby people and my question is the bump box really needed? This will be my first nitro/pull start. I have a Tmaxx2.5. Is the after run process the same as the Tmaxx? is it safe to assume to treat the after run process the same across all nitro engines? I appreciate all the input. Thanks in advance!!!