[johnwalkr]

One thing they offer which is really uncommon is parametric models instead of geometric models only. It's like getting the source code instead of only a binary file. So, you can easily suppress unwanted detail.

[MengerSponge]

They've doubtlessly improved things in the decade since that happened, but the important take-home for me was to just use my Parts Library for standard socket head bolts.

For weird things? Full parametric models would be great!

[albrewer]

The way I handled this in SolidWorks was to have an assembly configuration with all the detail suppressed and only use that in my model.