I think I'm taking the n+1 approach. Got some parts to tune up my old ride a bit so I can use it for commuting. LBS was clearing out stock for the season and offered 33℅ off. Had a pair of Roubaix SL4 I really liked, one with 105 stuff and discs, the other with Di2. Ended up with the latter, even though I think the accent colors are ugly. Was just so to smooth to say no to. Debating about going back for the other and swapping everything over...and then beating on the ugly one for my commute and trading in the old.