I find that most of my power tools remain unused... When building kits or scratch, I find it easier and quicker to cut with basic hand tools (razor saw, knife, coping saw, and frequently a RotoZip bit in the Dremel for free-hand cutting of interior cuts, etc.) than to get out the power tool, set it up, make the cut, etc. The exception is when I need to make repeated cuts to make a series of like or similar parts (like ribs or fuselage sides), when cutting out large parts (especially in plywood), or when ripping stock to make spars or tri-stock. For that, I find my tabletop bandsaw and/or scroll saw to be completely viable, no need for a circular saw... I do have one of the small HF combo belt/disc sanders that it pretty handy, especially when fitting a lot of sticks (like building a stick-built fuselage) or smoothing up curved cuts such as ribs. You can get VERY precise fits on joints using it. Just make the cut a little long and sand to precise fit.