Tank options

Currently i have about 1000 points in a dark angels army painted up and ready to roll, the only vehicles i have are a impulsor and a redemptor dreadnought. I was looking to add a tank or two to that army for when i move to 2k games, i was thinking a repoI plan to run them as gladius task force most likely but i’m still pretty new to tabletop so i’m open to suggestions! Any tank advice and recommendations would be appreciated!