I love Koi wa Magnet. I feel like the song was tailored to Risa, it's very much in her style.
In general though, this smooth style fits current CG very well. I think before 2nd Gen joined and with Uta they were going for a cute, rough, pure kind of feeling. But with Funaki's vocals and Nanami's poise, (and Chisaki and Ozeki gaining experience) they've become a very sleek and talented group.
I also can't get over how aesthetically pleasing Nanami is. She carries herself like Sayu and Ayaka did/do 20+ and she's still so young, combined with a lot of natural beauty, she's going to be a force to reckon with looks wise (and Funaki with be ability-wise I'm sure).
If Ran Ra Run is filled with lots of Chisaki and Ozeki than I'm pretty happy with CG doing triple singles all the time, one song for each... "generation" of girls (exp first gen, newbie first gen, second gen).
Lastly... because of Momochi, I can't help but make the comparison, but CG is so much better than Berryz was when it comes to serious face
![XD XD](./images/smilies/XD.gif)