Trying to pic a cam. What can I expect from these?

[BlackRat]

Comp cams extreme XE274S
Range 2000-6400
Adv Duration int=274 Exh=280
@ .050 int=236 ex=242
LIft w\1.7 rockers int = .568 Exh = .578
Lobe center 110

Wanting a good lumpy idle :yesnod: I am running a straight drive, 3:70 gears .030 454 aluminum heads 10:1 or so compression. Also looking at this one:

Comp cams extreme XE282S
Range 2400-6800
Adv Duration int=282 Exh=290
@ .050 int=244 ex=252
LIft w\1.7 rockers int = .590 Exh = .598
Lobe center 110

Which one do you guys suggest.


Thanks
Wade