i got the line 6 spider valve 4x12 slanted, it retails for $100 less than the laney(its around $800 i think).
but i choose the line 6 over the laney due to the dimensions and i got it much cheaper, the line 6 is the same size as the mesa traditional/bogner/ cabs and from what i hear about the mesa traditional and bogner cabs are the exact same on the line 6, its a little soft in the low end, but more tighter, more mids and highs. compared to the mesa standard.
the laney was a tad smaller and i would think would make a noticeable difference in tone.