My view is that the EBB conversion is a better option than the ENO hub, if only for the following reasons -
You don't need to build a wheel on a new hub .
You have easy wheel removal/refitting with no re-adjustment of chain tension needed.
If you ever want to use disc brakes then EBB's are the way to go...
There are currently two EBB's for conventional BB shells available - the Trickstuff Excentriker
and the Forward Components
I've been using the Excentriker for well over a year now (in some pretty dire conditions too) and it has done exactly what it claims to do - simple as that, no problems at all.
If I was buying again though I'd be tempted to go for the Forward Components one, if only because it's cheaper (and just as well made - just a bit different). It wasn't available when I was buying though.
You might find this
interesting anyway - there are a few of my usual outspoken (and unsolicited) opinions on there, but if you ignore those.......