It's DUMB to use '9' for ALL their engines, no matter the size (.12 through .28) or port count (except for the TM523 Revo engines which didn't get stuck with the new name scheme).
I can understand the WS9 being the latest version of the WS7, but the rest is stupid. 'Hobby9', 'Junior9', 'Circuit9', 'Buggy9', 'Series9', 'Racing Truggy9, 'Monster Truck9', etc..........
What was wrong with C6, WS7, S3, S5, S7, TM728, and TM928??? Makes it harder to know what yer lookin' at.
OK.....Rant done.