R.J.
Hulu is free... just pop over to their website and start streaming/trying it out right now :)
HuluPlus has a free 2 week trial, and then is about $10 a month if you decide to keep it. Plus lets you watch through your xBox and you get the whole season (otw, you only get the latest 5 episodes). Again, since it's free to try it, why not?
The major differences between Hulu & Netflix is that Hulu & Hulu+ both have commercials, and Hulu/Hulu+ streams shows 24 hours after air (or 7 days after air, depending on the show) so you don't have to wait for the season to end.
IMHO? Absolutely. That's what we do: Hulu & Netflix.