I doubt that any other arpeggiator could do a similar job as The Orchestra does. Anyway, the thing is that they use 3 separate arpeggiators plus 2 envelopes at the same time and the presets mostly combine 5 different slots with stacc repetitions, arpeggios and sustains, so it is pretty complex programming to get the impression of a whole orchestral section playing little arrangements.
I bought TO last December and I really love it - now being on sale for 199€, it would be a no brainer for me, as it contains all orchestral instruments plus even choir - with the engine and their fantastic presets, it is the best all-in-one solution that I can imagine
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