Spinny is good, in my case at least, because it teaches your legs to spin a smooth, high cadence. This has the effect of widening your powerband. When riding my geared bike it allows me to stay seated and spin a higher cadence when the group surges, then drop a cog. Rather than having to drop a cog first, then stand and mash. The former is much smoother and efficient.

or a poser.

I roll 52x16 fg
In town and on centuries am I a poser now?
I guess I'll have to go shopping fo skinny jeans.
Is a white belt optional or is that just an EMO thing?
I get confused with all the techie jargon.

Enjoy

48 x 16

I like it because it gives me more top-end, but I can still mash it up 99.9% of the hills in my city. Probably going to a 49 x 16 as soon as I can get my hands on the right chainring.

apparently.