Please name a compact camera + lens combination that has all these features you talk of in the size of a G1x (with lens retracted). It's all about compromises. If it weren't for size and weight issues, we'd all be lugging around full dSLR kits.
Sony RX100 (I have it):
- Very fast AF
- 10 frame buffer
- Fast clearing with good SDXC card
- Fits in pocket easily