I would also think about these aspects:
If You take the Airbus will You get bonded?
Also if You take the command at your present company how much can you save let's say in one or two years? Maybe You can save enough to sponsor yourself a type-rating in the near future if You want to change or if your company goes bust. Even with command rating and time under your belt You can sit back to the right seat if there's no more option.
If You can start builiding command hours and earn more that's something that shouldn't be overlooked.
Of course this whole story is about job security and future planning...difficult if not impossible thing today.