45-60, which is better: JBB or Barbarian Spiritist's Hammer?

[loramin]

I have a very nice friend who lent me a Barbarian Spiritist's Hammer, and it's been great. However, my friend said that if I wanted I could sell the hammer and convert it it to a JBB. I'm only a few levels away from 45 (aka the JBB level), and I'm wondering: should I?

I had a JBB on live, and it was great, but it's hard to say (based on 10-year-old memories) which one was better. Once I get my epic, it seems like the JBB would clearly be better, but until then should I keep the hammer or sell it and buy a JBB?

Any thoughts would be appreciated.