The Safari weighs 5.5 lbs including the 8 AAs. If this is a problem, one can spend $37.95 for the Swingy Thingy (bungee harness) which is supposed to make the detector feel nearly weightless.
I would not expect anything to break off in *normal* use, but don't know enough to give them a relative rating in various accidents.
You can sweep it fast in lower trash areas, but in higher trash areas, like with most detectors, the speed of the human brain in deciding to dig or not *may* be the main determinate of sweep speed (sometimes not true).
FWIW, one of the top Explorer experts has switched to Teknetics G2 & says it gets goodies with stock 11" DD coil that Explorer couldn't see, even with 5" coil.
Yes, it is way too stressful to pick one detector over all others & feel 100% sure the right choice was made. If there was 1 best choice for all, only 1 detector would be made.
A great many detectors have almost equal results & users at least as likely as dealers or mfrs to exaggerate differences.
At this point I feel more like using my AT Pro than my Safari, but I haven't put the Safari through all the tests yet. I can tell you the AT Pro correctly gave high tone on dime in air test at 11", but the Safari mostly gave low to mid tones at that distance. The AT Pro found me a dime down 7" correct high tone & correct visual ID 80-85. Many excellent detectors. Best wishes, George (MN)