Glass Bottles

Anyone use glass bottles? Lifefactory in particular? Love 'em? Hate 'em? Thoughts?

I'm thinking of investing in these..

I used them some with my oldest. I liked them because they cleaned easily and didn't stain,at all. I bought the covers like tose for them too. With my youngest I use playtex drop ins.

I only used them to store my breasmilk in. Like the first poster said, they're super easy to get totally clean.

It's all I used! You don't have to worry about weird plastic chemicals.
LO dropped them constantly, they never broke

Thanks for the input ladies.  

Any input on how they did with gas/colic?

I used munchkin glass (do they even still make them?) and loved them. Glass just worked for us until I got lazy and switched to drop ins when DD was 9ish months