For the most part you can achieve the same aggressive position on almost any road bike. Just a matter of adjusting or swapping the stem to accommodate the longer reach for the lower position. Get a 17 degree stem, flip it, and put it right on top of the headset. If you still feel "too tall" then you're right, you need a more aggressive frame. But it sounds more like you just want to buy something vs fixing what you have to your preferences. In that case there's really no "Fred" Cervelo or Scott. "Fred" is the rider.