Each has it's own pros/cons. The 1" body lift will help if you want to do a tummy tuck or gas tank skid lift. The Suspension is more expensive, but'll probably give better flex.
If you have the money get a good suspension lift now then add the body lift later if you wan to upgrade the skids.
05' TJ Sport, Yellow, 4.0 I-6, 6 speed, D44 rear
1.25" body lift, 33x12.50 Wrangler Duratracs, Undercover Fab Tummy Tuck, Rokmen Control Arms