It is a decent mid range electric marker. it is small and light, but some models have problems with the board, and changing modes is a pain. A g4 might be a good investment, or if your willing to...
its all personal preference, try out other guns that have different triggers and see what you like. Almost all types of triggers are made for the Mini.
No. The invert mini is a faster, lighter, more durable and all around better built marker. Besides spyders having a history of bad products, there are no spyders that match the consistency of a fully...