CF Card Speeds

I hate it when you have to switch CF cards. It just always has to happen right when you're in middle of capturing those perfect frames. I think I need a slightly larger card. Perhaps 4GB or 8GB? Learning from experience, I also want a 120x or higher. 80x is just too slow. Below is my quick reference guide to CF card speeds.

Transfer Speed:	MB/sec:
1x	0.15
20x	3
80x	12
100x	15
120x	18
133x	19.95
150x	22.5
200x	30
300x	45
400x	60
500x	75

References:
* http://en.wikipedia.org/wiki/CD-ROM#Transfer_rates
* My flickr pics here.