Tonight is the 2nd leg of the promotion playoff final to Primera. Getafe-Tenerife... should be interesting as both teams have been playing really well this season.
Getafe can bounce back to Primera one year after relegating. Despite the budget cuts they've managed to build a solid team under manager Bordalás, who already promotes Alavés last season. Meanwhile Tenerife haven't played in Primera since the 2009-10 season, and after a brief spell in the third level they have reconstructed themselves under Mallorca icon and former captain Martí (who retired in 2015 at age 40).
Tenerife won the first leg 1-0, so they have a pretty significant advantage, but Getafe has been very strong at home this season, so anything can happen. The away goals rule counts, but after 120 minutes there will be no penalties if the game finishes 1-0 (in that case Getafe will promote because they finished above Tenerife during the regular season).
Don't really care who promotes, but I rather it be Tenerife due to them being managed by Martí. Plus it's always nice to see the Canary Islands rivalry in Primera, and Getafe doesn't have much of a fan base so their stadium is a bit soulless and without atmosphere.