Quiet complex question. XC pro/comp are equally same, just comp does not have grease guard feature. Quality is same good. Depends what budget you've got XC Pro is on pricey side. Now, Pantera 92 actually was equipped with Suntour and as mid-range bike had X-1 or either XCE groupset with X-press pods. If you willing to build with correct period go for it but this cheaper groupsets may be even harder to come than fancy XC Pro. Just avoid X-press shifters, Suntour had issues with indexing mode between cogs so Suntour pods have a bad reputation. I've got wishbone shifters because they look funky and are pretty rare, but best option IMO are thumbshifters down to LTD groupset. They are much better than wishbones and outperforming Shimano XT thumbies in all way.