Want to expand on my earlier comment about the stainless kitchen sink job because I think the "why" is useful for anyone making this decision.
The reason hydraulic won on that specific job: the draw was 180mm deep in 1.5mm 304 SS, draw ratio of 2.1. That's right at the limit of single-draw capability. The material needs very precise blank holder force control through the entire stroke — too much and it tears, too little and it wrinkles. And the optimal force profile isn't linear — it needs to decrease as the draw deepens because the flange area shrinks.
On our hydraulic press, the blank holder is on its own hydraulic circuit with proportional valve control. We can program a force-vs-position curve with 0.5kN resolution. The hydraulic system naturally provides constant force regardless of speed variations.
On our servo press, the blank holder is a nitrogen spring system (most servo presses use this). You get a force that increases with compression — the opposite of what you want for deep drawing. Yes, you can compensate somewhat with the punch motion profile, but you're fighting the physics of the nitrogen spring.
The real answer for servo press deep drawing: if you're serious about it, spec a servo press with a servo-driven blank holder (sometimes called a servo cushion or active cushion). Komatsu offers this on the H2W series, Aida on some DSF models. It's essentially a second servo axis controlling the blank holder independently. With that setup, servo beats hydraulic on everything including deep drawing. But it adds $80-150K to the press cost depending on tonnage.
For shops that do 80% blanking/forming and 20% drawing, a standard servo press with nitrogen springs is fine. For shops where deep drawing is the primary operation, either go hydraulic or spend the extra for a servo cushion.