I always doubt the need for special bleeding tools.

I bleed all my cars (all have ABS) without any special tool except some home made fluid collectors, I usually prepare plenty of brake fluid, fill up the reservoir, then have a helper watch the fluid level, I pump the brake petal, he/she cautiously stops me as soon as fluid level drops to half, (For some of my cars, I don't even need a helper, I can watch the level and pump the brake all by myself), then fill up the reservoir again, repeat the procedure until the fluid from the brakes is clean. It's so easy I can do it in one hour now.

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99 BMW 540i 6-speed 110K Km
03 SAAB 9-5 wagon 80K Km
92 400E (Sold) 245K km
Still missing the days with the Benz, it kept me busy.