well, leone certainly wont ever be accused of rushing his scenes or stories, and the dollars trilogy just got longer and more deliberate (or slow depending on your view i guess) with each film. i personally like all 3 of them, as they were somewhat revolutionary for westerns at the time, partially because leone didnt know the 'rules' of how they were 'supposed to be' made and shot. he brought in a unique visual style, and the characters are all shades of grey, rather than clearly evil and clearly virtuous, which is of course much more realistic.
and all 3 have excellent scores by film score legend enno moricone!
i reco'd the good, the bad, and the ugly because its the most famous, ambitious, epic, grand, etc. of the 3, but it
is really fucking long. sooo maybe you should start with a fistful of dollars (hour forty), and if you like it move on to a few dollars more (two hours),
then the good/bad/ugly (two fuckin hours and forty goddamn awesome minutes) to top it off. or maybe thats too much cowboy action for you euro types?!