Wobble and weave, a million things can affect how the bike rides, your body size in the wind, loose fitting jackets, windscreens, tyres weight on the bike, state of roads, I do not know any bike on the planet that does not wobble or weave a tad at some stage, a bike is a bike, on 2 wheels, do not worry, just get what makes you feel comfortable, it is all about how you feel on the bike, others will have their opinions, but it is you and your confidence in the bike you like, so as many have said, get out and test ride, as many bikes you need to to find your comfort zone.