I used to have a Birdog but the best C/N figures I could get was around 7-8db C/N for G19 on TP 11842. Now with the First Strike, I was able to get 11.9 C/N. Took a little getting used to but I like seeing the better numbers. Also, the Birdog didn't give me the ability to edit which transponders and symbol rates I wanted it to look for. First Strike lets me put in the frequency and the symbol rates so if something changes, I can just get the latest technical specs off the Glorystar website. My phone has web so I can do this on-site if necessary.