Well, I just found out that my local Home Depot sells LED bulbs with a candelabra base. They're only 25 watt equivalent (compared to the 40 Watt incandescent we have now), but they're dimmable. But, they cost $17 $Cdn each, and that's pretty pricey if I have to buy 6 of them.
The guy at Home Depot says that the package says "dimmable" on it, but that I may have to replace the dimmer switch anyhow because old dimmer switches might not work with the relatively new LED bulbs.
But, he also said that Home Depot here in Winnipeg has only been carrying LED bulbs for the past 4 months or so, and he's seen a steady decline in the price of LED bulbs over that time. Every month or two there's a drop in the price of the bulbs they're getting in of about $2 on a formerly $20 bulb.
He also said that 60 watt equivalent LED bulbs with the medium Edison base were down to $12 each now, and given their long life, it might make sense for me to replace the CFL bulbs in my hallways with LED bulbs. I wouldn't replace them all at once, I'll just start buying spare LED bulbs to replace the CFL bulbs I have now. He also said they have a 100 Watt equivalent LED bulb, but it costs $27, and that's still a bit too pricey for me.