The hemi is overpriced, paid less than that for my 05 at 98,9k. I do love this thing, the power behind it is great. Mine does seem to be a bit more responsive on the gas than the bf's 07 hemi.Being biased I'd say get the hemi.
That being said, if it is your daily driver, you're gonna feel a slap in the face when it comes to gas mileage. The diesel would be a much better option for better gas mileage. Although, if you wanted great gas mileage, you probably wouldn't be purchasing this to begin with.
2005 Silver WK 5.7L Hemi
Silver WK club #69