Bookmarked, thank You. Mind sharing a bit about Your experiences? Are the initial investments cost high or low? Are there any drawbacks which inhibit any other

Bookmarked, thank You. Mind sharing a bit about Your experiences? Are the initial investments cost high or low? Are there any drawbacks which inhibit any other functionality (what to do to avoid memory leaks)? Is the end-product really mantainable? Does compose easily? I'm eager to learn :)