Ball head? Pan? Tilt? Huh?

G'day guys,
Since you've already provided me with a depth of knowledge with regards to my photography, I was just chasing some knowledge with regards to tripod heads.
I'll be purchasing a set of Manfrotto 190 series legs (either the 190D or 190CL, I'm on a really tight budget), and was just wondering the difference between something like the 141RC head vs. a 484 RC ball head, like the one Deano has for sale in the forums...
It appears the ball head is a fair bit lighter, which would be good in my case as I do a fair bit of walking around when shooting. That being said, I'm still after an opinion of someone who has used both, or even better someone who has used these models!
Cheers,
spartikus
Since you've already provided me with a depth of knowledge with regards to my photography, I was just chasing some knowledge with regards to tripod heads.
I'll be purchasing a set of Manfrotto 190 series legs (either the 190D or 190CL, I'm on a really tight budget), and was just wondering the difference between something like the 141RC head vs. a 484 RC ball head, like the one Deano has for sale in the forums...
It appears the ball head is a fair bit lighter, which would be good in my case as I do a fair bit of walking around when shooting. That being said, I'm still after an opinion of someone who has used both, or even better someone who has used these models!
Cheers,
spartikus