What size of binding do you usually put on a quilt? I've heard everything from 2" is the basic to whatever you like. I know the quilt police wouldn't approve, but what does everyone usually like? Also, straight or bias? Just curious.

I use 2 - 2 1/2 inch depending on how thick my bating is.
I have always cut it on the straight grain and never had a problem with it.

2.5" on the grain, with 45 degree connections. I did one that was straight recently, and OMG it made it bulky in those sections. I didn't realize how much that angle helps!

that is how i do it too. sometimes i use 2" if i want a thinner /smaller binding.
i also press the seams open that are on an angle.

I use 2.5 and connect them at a 45 degree angle. It just seems to be a nice size for me.

Ditto.

I use anything from 2.5" to 3.5," with 3" being my usual.
Strips are cut cross grain, just like any other strips I would use in my quilt. I fold down one corner into a point on each strip, press, and use the fold as my seam line when joining at a 45 degree angle. Baste first, to make sure the strips are lined up properly; then stitch & trim the seam. I start in the middle of a side, leaving a good 6" hanging loose. Stitch to within 1/4" of a corner, backtack & remove. Miter corner & begin again. When I get to the starting side, I leave plenty of room to manipulate my binding so I can line it up, mark with chalk, and again make that 45 degree seam. It's more important to baste this last bit than the initial diagonal seams. Then I flip to the other side and finish by hand.

that happened to me, too. I will stick with the diagonal join from now on.

Me too, except I use 2 inch strips on the grain.

I use 2 1/4 with straight of grain