WayneTIt is meant to be an upgrade, and is more expensive than the base model. Technically H1 isn't steel from what I understand (missing the carbon that can create rust). Some people see H1 as a downgrade for daily use in mostly dry climates. Around saltwater/blood/vinegar etc, H1 can be very useful. It is work-hardened, so the Spyderedge version is considered better than the straightedge by many, since it will have better edge retention. If it were me I would be happy with the upgrade. As long as you have a way to sharpen it, you have a very nice low maintenance blade.
WayneTOk. Thank for the explain. This is my first time buying the knife. Wasn't sure what is the difference. Any suggestion how I can sharpen the serrated knife?
WayneTSpyderco sharpmaker is often the most recommended method. It is easy to use on serrations. Otherwise I have heard good things about some lansky stones meant for serrations. If you want something cheap, many portable sharpeners come with a cone shaped diamond rod that will work on serrations, you will just need to have more technique to get a consistent angle. If you get one of those, just avoid using the pull-through sharpener part on your straight edge knives unless you are really in a pinch. they don't give a good edge and take off too much material.
The other option is to mail mail it to spyderco. I think they do sharpening of their knives for cheap or free, but they will do a good job for you.
Also since you mentioned you are new to it, H1 is pretty neat. It can't rust AT ALL. At the Spyderco factory outlet they have a display where they actually keep some knives permanently in a fish tank.