We wish to purchase a few more programming pods and would like to know if we should purchase the JTAG-HS3 or the JTAG-HS2. In the past we bought the JTAG-HS2. We are using an ARTIX-7 and a KINTEX-7. (On another project we use the ZYNQ-7000). When should I buy the JTAG-HS3 and when would I buy JTAG-HS2? What is the advantage of one over the other and what does one do that the other does not do?