  We report on an improved scheme to generate Bose-Einstein condensates (BECs)
and degenerate Fermi gases of strontium. This scheme allows us to create
quantum gases with higher atom number, a shorter time of the experimental
cycle, or deeper quantum degeneracy than before. We create a BEC of 84-Sr
exceeding 10^7 atoms, which is a 30-fold improvement over previously reported
experiments. We increase the atom number of 86-Sr BECs to 2.5x10^4 (a fivefold
improvement), and refine the generation of attractively interacting 88-Sr BECs.
We present a scheme to generate 84-Sr BECs with a cycle time of 2s, which, to
the best of our knowledge, is the shortest cycle time of BEC experiments ever
reported. We create deeply-degenerate 87-Sr Fermi gases with T/T_F as low as
0.10(1), where the number of populated nuclear spin states can be set to any
value between one and ten. Furthermore, we report on a total of five different
double-degenerate Bose-Bose and Bose-Fermi mixtures. These studies prepare an
excellent starting point for applications of strontium quantum gases
anticipated in the near future.
