This is my first 6" build. Took me a long time to decide on a frame, and I finally settled on the Reverb. The 2150kv Hypetrains have been working really well so far on 4S - they seem to strike a fair balance between punch and efficiency. I typically get around 4 minutes up to 5 max using a 1300mah and carrying a "big" GoPro, depending on how I fly. Weight without battery and GoPro is 430g.