Hello! I have both. If you play live for small groups and like 61 notes, the 800 cannot be beat (portability and on-board speakers). I love my 2x in my home, safe and sound (beautiful board) and use it as my studio board. You're probably aware they are both the same OS, but the 2x has many extras and is a player's dream machine.
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Yamaha 920 / Yamaha Stagepas 100 BTRs / Senn e935 - LIVE
Roland RD 2000 / Tascam DP24sd / ATEM switcher - STUDIO