I would have to say that the most used tools that I use reguarlary are the: Circular Saw, the Screw Gun, and a planer.
Then runners up are the "compound" mitre box saw. Remember "compound". You do not want one that is not compound.
Power sander belt is very important also.
Once you get the basics, you will be able to build your projects than you can just add on occasionally.
This is a question that will draw many opinions, so you will have to decide which one fits you the best.
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