Hey everyone, it's my first post so please be gentle! 
I can get a 2012 Fuji Roubaix 3.0 (it has the Sora group) for 550$ out the door. But on bikes direct I see a Mercier Aquila with a Tiagra group and Shimano R-501 wheel set for 150$ more than the Fuji. The Fuji comes with the stock wheelset (CGC Alloy whatever that means).
I'm not sure if I should stick with the Fuji or go for the Mercier (if the 150$ is worth it or not). I also read things about the Sora shifters being hard to shift in drops so that also makes me nervous (I've only used the twisting shifters before).
My current bike is the GMC Denali from W-mart so I'm not familiar with any of the higher-priced bikes
I've done 4 century rides on my Denali so far and I was wondering if this would also help my speed for future ones (I always see a lot of people just going much faster than me and I can't keep up).
I can get a 2012 Fuji Roubaix 3.0 (it has the Sora group) for 550$ out the door. But on bikes direct I see a Mercier Aquila with a Tiagra group and Shimano R-501 wheel set for 150$ more than the Fuji. The Fuji comes with the stock wheelset (CGC Alloy whatever that means).
I'm not sure if I should stick with the Fuji or go for the Mercier (if the 150$ is worth it or not). I also read things about the Sora shifters being hard to shift in drops so that also makes me nervous (I've only used the twisting shifters before).
My current bike is the GMC Denali from W-mart so I'm not familiar with any of the higher-priced bikes