Brothers I have done long tours on both CG125 and GS150. I personally like GS150 due to its superior comfort and ride pleasure. Also GS150 has a higher top speed compared to CG125 and I enjoy beating CGs on GT road
However, fact remains fact, that CG125 has a much better pick than GS150. What also remains a fact is that GS150 achieves a higher top speed and is an overall pleasure to ride especially on long routes. Although, in city traffic it is hard to catch CG125 as it not only has the quickest pick in local bikes but is also very agile. You cannot zig zag a GS150 through traffic like you can with a CG125.