Quick advice needed... Buying a Reverb tonight :)

Hello guys,

Just a quick question.

Im about to order a reverb stealth seat post.

I have measured my current seat post and it is 390mm long.

Im guessing the 380 mm reverb with 125mm drop will be ideal for me.

I cant see me needing a longer post.

Or is it advised to go for the longer post with a reverb.

Thanks

Phil