I got the Cobb thinking I would only go tune and liked the ease of use. The simple flash process and tunes available made me get some hardware pretty soon. What I am saying is that Cobb makes you catch the bug soo easily. If stage 1 is what you want for sure I would say GIAC even though Cobb is great and gives you updated maps every once in awhile.
I went FBO + E85 a while ago and would never go back. You get so much return on small investments in mods on the x35 machines.
E92 335i twin turbo 2007
ETS ER VRSF BMS AST4150 Megan APEX Cobb JB4 Aquamist