Look it's hard to say with the info you have given us. Choosing a recommender depends on lots of things, beyond just the time you spent. It's important how much leadership you have in the role, how high a position they are, how many people THEY lead, whether they have an MBA and from where, and a dozen other things.
As for your personal opinion, you SHOULD state it, because in general people that like you more give you better recommendations
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