The vacuums ruining PCs paranoia is so blown out of proportion.
The main thing that causes static in a vacuum is the motor. You have a long hose with a brush on the end of it that is far away from the motor. Horse hair brushes are fairly cheap, easy to find, and are much better than the static-prone plastic bristle ones.
When holding the hose nozzle near the brush with one hand and touching the metal frame of the PC case with the other, all static is grounded by the case, just as it would be when attaching yourself to it with an anti static wrist strap.
I happen to have a pretty decent Riccar Pristine canister vac I bought used locally for $200 that was only 1 yr old and in great shape. They go for $600-$700 new. It has a telescoping oval aluminum powerhead wand, wooden beater bar roller with horse hair brush, lifetime bearings, digital push button power level adjust, swivel power head, 4 swivel canister casters vs non pivoting wheels, lifetime roller bearings, and HEPA filtration.
I also buy HEPA bags for it on eBay that only cost me about $13.50 for a 6-pack with free shipping. HEPA bags are actually a better deal than the paper ones because the aftermarket ones (which work fine) don't cost much more and allow better airflow and don't get clogged nearly as fast. You can literally pack them full, which means they last longer than paper ones. This vac is very powerful too, and made in the USA.
I also have a Husky Quiet Air compressor which was $80 at Home Depot. It's 90 PSI, has a 3 gal hotdog tank, coiled shop hose, and I bought a trigger nozzle for it for $5. It's actually quieter than the average vacuum.
My PC case is an Antec DF-85, which I've added a 120mm side fan to blowing in on the GPU. I have the lower of the two 120mm rear fans facing inward as part of a push/pull assembly on my H50 CPU cooler. I have Silverstone fan filters over that and the side fan.
All I have to do to clean it is pull the filters out of the 3 front 120mm fan doors that swing open and dust them off with my horse hair brush/vac, then use the crevice nozzle to pull dust out of the side and rear filters.
Every few months I take the side off and blow the dust out while holding the vac brush where I'm blowing the dust to. The vac brush can be placed over the exterior of intake and exhaust fans while blowing through them from the inside.
I clean the rad/fan assembly by blowing the fans, then carefully placing the nozzle in between the fan blades without touching the rad, to blow through the rad as I move it around. The dust then clings to the inside face of the rear filter where I can suck it out with the crevice nozzle on the vac.
Since I have to do this indoors due to no outlets outdoors, I'm going to further perfect my methods. I plan to place the PC tower on my large pullout cutting board on top of the stove and use the stove's hood vent on high to pull dust out. I'm even going to take the large plastic bag that came with my TV and wrap it's open end around the side of the case after taking the panel off, and cut a small hole in it to allow me to use the air nozzle through the bottom of the bag. Using the bag to seal the side of the case off combined with the stove vent fan and the vac brush on the top PC exhaust vents, should minimize any airborne dust from lingering in my apartment.