Horses for courses innit. I've gigged extensively with an LMII and it did the job right every time. If I had to settle down with one amp and no other, it'd be the LMII regardless of cost.
I've always been Ashdown curious and when my soul band fell apart, I joined a blues band so I thought why not and bought an Ashdown ABM RC EVOII 575. I absolutely love the tone I get out of it with my Sadowsky and it's absolutely perfect for blues.
The only down side to it is I don't trust it so I've had to buy a second head as a back up (Hartke HA3500) which is a bit of a nuisance but forget all that bloody nonsense about Ashdown being "dull" and "muddy", my bass finally sounds like a bass with the Ashdown and the bottom end of the band is fuller and fatter than it's ever been. It's very punchy too but anyone wanting a hi-fi sound or the "slap tone to die for" that is often quoted better look elsewhere.
Like I said, horses for courses.