SRAM vs DRAM

[morcos]

hi there,
im wondering if anyone knows the advantages of both SRAM and/or DRAM.
so far i have the following:
DRAM
- uses a cap and transistor to store, so it takes a bit more time to store because you have to charge the cap.
- value stored will lose integrity over time, and thus needs constant refreshing
- costs less

SRAM
- uses 6 transistors to store. so less time to store value.
- value does not change unless deliberate change has occured, or power is off
- costs more