Test prop has short acting esters, meaning its time release mechanism releases the testosterone much more quickly. So it takes effect quickly, but leaves your system quicker so you need to inject more often (ed or eod). Good for short cycles, front loading or ending a cycle.
Enant has a longer acting time release, meaning it takes time (a few weeks) to build up in your system, but levels stay much more even and you can inject less frequently (2x weekly or weekly). Good for longer cycles or HRT.
Keep in mind that no matter which ester of test you use, once the ester falls off, the resulting test is the same. Test is test, the ester is just a time-release mechanism. Lots of people make claims like one has less water retention or another has less sides, but there is no basis to any of that. Test is test is test.