Bypassing single supply op amps biased at mid-supply
I went to a break out session titled "Top 10 Op Amp Mistakes" at a conference not long ago, given by an Analog Devices FAE and this scenario came up. The first option with bypass caps from both power and the ground plane to the virtual ground will be better. Ideally, you'll want to have several caps each, say 10uF, 1uF, 0.1uF, even better, in progressively smaller packages. Of a 0603 and 0402 cap of the same value, the 0402 cap will have the higher SRF. The idea is to extend the SRF of the total capacitance out significantly further than any signal of interest.