I'm not a new user, but I AM about to decide that my time is worth more than the persistent fractal time-suction that seems a requirement, to work around the Sketchup frustrations I've been running into. This has been happening far more frequently with a recent project that I could have done in an hour or less in Vectorworks, back in the day.
Case in point: Trying to create a cast-metal wheel with a wide surface that tapers in thickness down to a plain disc center, with that disc being radially "drilled" for bolting to a spindle. Eight evenly-spaced 1/2" radial holes are required for this design. To show that seemingly-simple facet of the design has been an /appalling/ time-suck.
First attempt required a workaround to get SU to do radial duplication of the 1/2" circles representing the holes. Put me down for a couple of hours of forum-reading, dead-end methods, youtube videos...finally got that to happen.
Then those holes had to be extruded (pushed) to knock the holes through the disc. Getting that to happen wasn't too hard, but the "intersect solids" process (required to produce something that resembled a hole) left an absurd mess of extra lines and arc-segments to be cleaned up, plus at that point, components started to ignore basic "push" attempts (just moved the shapes, rather than extruding them), and was generally squirrely.
All this time, I was thinking there HAD to be a better way. Searching again, I came upon a user's plugin to make holes in solids - which was a commendable effort, but took me several more hours of registering to even get the plugin, and then figuring/testing how it actually worked, since even the youtube vid gave only the minimal details and the developer isn't a native English speaker.
For these hours, I was rewarded with SU crashing every time I tried to make the second hole (of eight). It had LOOKED like it was going to work, but...not so much.
Now trying to diagnose the crashing problem, I took my radial hole-pattern and copied it into a new file, planning to see if the same crashing would recur. But no, I wouldn't even be able to get THAT far: now, simply drawing a circle and specifying the radius no longer works. I specify 5" (or '5.0' even) radius, and I get a 5-11/16" /DIAMETER/ circle. Then I manually pulled that circle to 10" with the mouse, checked the diameter, and...it dimensions to something completely different.
So to conclude my rant, would I be an idiot to expect much less of this nonsense (or NONE, preferably) if I were to fork over the $590 for Sketchup PRO? Seems to me the answer would be YES: it would be good money after bad, more time-suction right around the bend. Any thoughts from Pro users? I only use Sketchup on an occasional basis - it performed much more admirably when I was using it for some home renovation work, but mechanical design so far has made it seem like it's far from ready for prime time.