i've used the duplicolor SPRAY caliper paint many times, with great success. it last quite awhile, is about as user friendly as a rattle can can get (very hard to get runs with it), and has a nice finish.
make sure you let it fully cure for 24+hrs before bolting anything up or it can smudge.
never tried the can stuff. cans cost $7 and the box is like twice that for the same coverage.
1996 with 254k miles, L32 4" FWI -> ported N* -> Ported Gen V w/3.0" Pulley, Stage 3 Phenolic I/C, ZZP FMHE, 1.84 RR, Headers and 3" pipe to mufflers, F-body brakes, and lowered on Eibachs. -RIP
AMG C400 White on black. Stage 2 w/E30 - 11.9@117 -daily