DA Sander

for strange shaped spots and no blaster, you might find useful a big wire CUP on a right angle grinder. aircraft stripper in some places useful BUT be sure there is no r esidue in any cracks or your primer might not adhere.
I admit I have run some cheap DA's forever but that was before everything was made in China. I picked up the highest (HA ) priced DA at HF last year. it ran once for a few minutes and died! ha
paid $40 for another one somewhere else and it still runs after completely doing 3 cars with it. go figure??
\ like he said,quality is great.... I like buying quality stuff but not always proves to be a must. just me.