The best replacement for es8 is mo8.

The best alternatives to es8 are rated as following:
★★★★★  mo8
★★★★★  es5
★★★  roland fantom x8
★★★  xs8
★★  x8
★  s90es
★  motif 8
★  fantom x8
★  motif xs8

Your alternative for es8 is not listed? Suggest!
Speaking about es8, one probably shouldn't forget about cubase le.

Other search terms related to es8 and their ratings are:
★★★★★ cubase le
You have in mind a companion for es8 and it is not yet here? Propose!



Google Trends

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es8
mo8
es5