i have been looking at the BPE 205 CNC head and also the Hughes Engines CNC RPM head. when i go onto the Hughes site and look at the flow #'s, the are way better then BPE. this is what i took off Hughes site,

RPM CNC (not bigmouth)

lift INT EXT
300 221 156
400 266 185
500 296 206
600 303 218

BPE 205cc CNC

lift INT EXT
300 197 186
400 249 208
500 275 215
600 291 222

is the RPM head the better choice?