Well, at least your impulses are good ones!
The E1B by all accounts is an excellent light. I have been eyeing one, as well, for some time. I have an E1L, so have a pretty good idea of what to expect from the E1B, and it is just different enough to be useful to me, which is why I am still thinking of gettin one.
For one, it should carry very well in a suit/business attire, and not shred your clothes. I'm afraid I can't say the same for the E1L. The E1B also comes on in "high" first. Frankly, for most suburban/urban EDC needs, I think that's fine and in many cases, better. You want to light up that parking lot or side street on the way to your car in the middle of the night? You don't want to start with 5 lumens.
The E1B should have very good throw, and the spill, despite some comments to the contrary, is somewhat useful. The E1L is rated at "only" 45 lumens (and probably really puts out about 75-80), and I've found that to quite adequate. The E1B, however it's marked should be putting out 110 or more, so should be even more useful, and give you more reach, and more brightness, which is good when you have some ambient light (street, building lighting) but also dim or dark areas (alleys, side streets, parking lots, parks, etc.) to navigate.
(In contrast the E1L has knurling and enough bumps and ridges and edges that you aren't going to drop it if your hands are cold or slippery, and it comes on first in low, so you are less likely to fry your night adapted vision in the middle of the woods at night. It also has longer runtime on high than the E1B, which has more use if you are out in the middle of nowhere overnight or longer, and not so critical in the suburbs or city. Unless there is a blackout or some disaster that lasts for an extended period of time, in which case, you probably have bigger worries anyway.)
In short, if you want a light to use for EDC/personal security while still in "civilization" but out at night for a couple of hours at a time, the E1B is the one to get. If you want to have a light for an extended (intended or otherwise) trip into God's Country, the E1L is the choice to make.
Don't get hung-up on the 80/110 lumen thing. Your eyes would never be able to tell the difference between 80 and 100 lumens, anyway. Thing is, as some have explained, SureFire rates their output in terms of the minimum that the light will put out, given the bin of the LED, current to the emitter, loss through the optic etc. So, when they first put the light on the market, with whatever LED they are starting with, all the lights will be doing at least, say, 80 lumens. That's the "worst performance" scenario. Many lights will put out more than that. At some point during the light's production, they'll have ordered more LEDs, and more likley than not, these will be brighter/more efficient than the originals, so the newer lights are even more likely to perform over spec. If SureFire is now rating the light at 110 lumens on the packaging, then they are saying that the current lights are going to be outputting at least 110 lumens (which you won't be able to tell from 80 lumens). There will be a few over-acheivers, sure, and some new "110" E1Bs might actually be putting out 130 lumens or thereabouts.
Now, you won't be able to tell the difference between 110 and 130 lumens. you might be able to perceive the differnce between an E1B putting out 80 lumens and one putting out 130 lumens. But as a practical matter, I don't think it would make any difference. And there is no way to determine whether the new E1B you get today will be putting out 110, 120 or 130 lumens. Whatever its actual output, you have picked an excellent light, so impulsive your purchase may have been, but I bet you've now got a lgith you will not part with in the future.