Hi, According to the size chart, I am...
Hi, According to the size chart, I am between a size small and medium. Would it be better to error on the more fitted side for a jersey?
It runs big.
Yes, get the small. The fabric is really great, you do not feel uncomfortable.
Just a note for future sizing references: Always check size charts on both B.C. & at Competitivecyclist.com (affiliated on-line stores!) because the charts sometimes differ! On this size chart, a small is listed as a 34" chest, but on Competitivecyclist.com a small is listed as 32"; which is probable more like the actual correct measurement for this jersey. So, this jersey (and some others) just seem to run large because the chart is not accurate. So look on both sites, (sometimes they're the same) and lean towards Comp.cyclist for a more realistic sizing.
Hope this helps your future purchases!