I have had success using a Mityvac with a collection reservoir to bleed brakes. Works fine just don't pull too much vacuum or air can be pulled past the piston seals in the calipers/cylinders and enter the system. I find keeping under 15hg is just fine.
The gravity method also works well. I just changed my rear brakes hoses on the 300D. Just installed the new hoses, cracked the bleeders and let it drip for 10-15 minutes. I rapped on the calipers every couple of minutes to break loose any bubbles that may be trapped. Worked great, no problems.
The old standby is two person bleeding. Its important that it is done correctly but it works very well.
If your brakes are not bleeding correctly then you have a problem that should be corrected for safety sake.
RT

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