I`ve tested the most VMs on Azure using GeekBench for Linux and results you can see below, the higher score is better. All tests were done on Ubuntu 16.04.2 LTS (GNU/Linux 4.4.0-78-generic x86_64). I`ve tested all v2 VMs and don't touch G,L,NV,NC series due to their specialization. Most of 25 GeekBench tests related to CPU therefore these results shows CPU performance, here is the description of tests. Chart "GeekBench Score / Price per hour" shows the most CPU performant per $. It seems DS2-v2-Promo is the leader and most compute optimized than F,Fs series.
Tests were done: 2017-05-22