Clip art for mac

I have just switched to Mac and my IMSI clipart files will no longer work. They are a bit old now anyhow and I wonder what other users find to be the most comprehensive, cheapest and best value packages on the market.

Though I have not used it for many a year, I used to have Print Explosion, and it seemed to be around about the best value, considering the amount of stuff you get. Wort a look at the latest version.

Print Explosion Deluxe 3.0

Thanks Kevriano - that looks like the kind of thing I need. On the odd occasions, I found IMSI didn't have what I wanted. Any ideas for the best free downloads for Mac?

Free clip art or just free general software?
Generally all the best freeware andshareware stuff is found here:

MacUpdate: Download Apple Mac Software & iPhone Software

Worth a search there for clip art too.