Hi guys! am currently thinking on buying a new road bike frame but i dont know which one to choose.

At this moment i have 2 frames in mind, the WCB-R-081 from workswell and the CS-686 from xmcarbonspeed.

WCB-R-081 geometry


CS-686 geometry


Both of the frames seem very similar in specs also..

http://www.workswellbikes.com/web/view/164.html
 WCB-R-081
Material: full carbon
Weave: UD
Include：Frame Fork seatpost clamp headset
Headset size:top 1-1/8 down 1-1/2
Seatpost:AERO
BB: BB68(BSA/BB30)/PF30/BB86
Size: 46/49/52/54/56/58
Frame Weight:980+/-40g
Fork Weight:400G
Seatpost Weight:163G
Test: CEN SGS
Warranty: 2 years

http://www.xmcarbonspeed.com/Productinfo.asp?f=1406
CS-686

Material T800 toray carbon fiber
Headtube: 1-1/8”-1-1/2”
Seatpost: Special post
Size: 42.8/45/48/51/53/55cm
Weight: 1030g for 48cm, fork 380g,seatpost 220g
BB System: BB86
Weave: UD
Finish: Glossy/matt/painting
Include: Frame/fork/seatpost


I am looking for an aero frame, but i don't know which one to choose.  Could you give me some buying advice on what would you buy and why?