Commercial for me . . .
I've said this before, but I use commercial portables because I HATE those cheap-@$$ belt clips almost all amateur-made portables have on them. They're usually small, cheap, plastic clip-on belt clips that slip or break off at the slightest strain. Again, not all but MOST are like this.
Also, the internal speaker on a commercial portable radio is usually larger than those found in amateur-made portables. Therefore, offering MUCH better audio receive quality. Personally I loved those big ol' old Icom & Radio Shack portable radio's. You KNEW you had a radio in your hand back then, and the receive audio was superb compared to the absolute TINY amateur-made portables today.
Clearly there are exceptions to this rule, however, for the most part I don't care for these ultra small amateur-made portable radio systems out today. They are definitely feature-rich, but lack the good old fashioned ruggedness, durability & feel of a good commercial portable radio. Plus, God forbid you drop your radio. There is a high probability something will break if it's an amateur-made radio. The durability of commercial radio's have a higher build quality to them which resist breakage MUCH more so than those made by amateur radio companies. Once again, although SOME amateur manufacturers are increasing their build quality, commercial portables typically have higher build standards and will hold up much longer than almost all amateur portables.
But that's me . . .