Hi guys, I was curious as to which kit would be better for my dad (and mom if she ever wanted to green box it). He used to shoot film SLR's like 20 years ago, but hasn't used a SLR since. He currently has an Olympus superzoom point and shoot and really enjoys using it. I know he would love either the XS or XSi. Perhaps the XSi would be better because hes got pretty big hands. However even the XS makes the olympus he is using look small. Which do you think would be better for someone with his experience? Does it really make a difference? I know these two bodies are very similar.
I plan on getting something for him/them before they take their 25th anniversary trip out to the southwest. I know he'd love to have a nice camera to take along. I think the 18-55 would be adequate for the trip, however he would probably end up wanting a 55-250 as well. Anything beyond the body + kit lens + mem card would be out of their pocket though.
Thanks for any guidance you can offer! 

Though in all seriousness, I don't have the money for that after buying the 300 f/4 
