I've been doing alot of research but most of the answers I'm finding seem to be from before the One Tamriel update. I started DB just to get the blade of woe and thieves guild just to check them out but I'm wondering if its worth it to wait until higher level (I'm working my way towards 15, not really new to the game just starting over on PC) to get scaled rewards or if it won't really matter at the end, and if I should just do them (and even their respective zones) whenever and use the rewards at the level that they come.

Any insight would be appreciated. Thanks!