In my humble opinion, the CL601 and DA50 are not really comparable.
The CL601 is a big airplane with a wide but short cabin. The baggage compartment could be larger, too. It has some performance shortcomings but everyone I know like it for its reliability.
The DA50 outperforms the CL601 easily, but the cabin is much narrower. You can do amazing things with this bird but: make sure which engines it got and what sort of avionics. In terms of versatility, it's hard to beat. But it's an old airplane.
Both of them are.
How about a used DA2000? Even better: a DA2000EX (classic). Good compromise: reasonably priced, big cabin, large baggage compartment and excellent performance.