A lot of changes have been made to the performance of various warframes (almost entirely for the better). If you care to know, here's a good review: PLEASE NOTE THAT THIS IS JUST ONE VETERAN'S OPINION. This is mostly just to help new players looking for something to set goals for. As always, Warframe is a game that likes to give players options. You don't need to worry about the meta. When in doubt, pick whatever is fun for you.