Mark:
I own a couple of Series basses with Standard and Europa bodies, and an MK Signature Balance K. I know what you mean about the standard body Series bass.. that F on teh E string is a bit of a stretch sometimes. But both the Europa and Balance K bodies are ergonomically perfect! They both balance very well, and the neck rests at a more typical position. Personally, I go back and forth about whether the Europa or Balance K is more beautiful... As to the tone difference between Series and Signature electronics, well there is a difference, for sure. It's not huge, but it's there. The only thing that sounds like an Alembic Series bass is an Alembic Series bass. But to my ears the closest you can get to the Series tone in another bass is with the Mark King Sig electronics, especially if you use a Fat Boy pickup in the bridge position. (You can find lots of posts about the Fat Boys on the Club. Some people think a Fat Boy in both positions is a tad too bass-heavy and after trying that setup myself I agree.) Best of all worlds, of course, is a Series bass with either a Europa or Balance K body - which Alembic will happily build for you for merely "pennies a day."