In my experience, Silver was amazing up until end of April/beginning of May. Then it died, but that's just me. May not have been true for everyone. However, for Gold/Elixir, Gold 1 and 2 are undisputedly the best. But since you're more focused on DE for your royals, I'd recommend Master 3. Farm with either a Giant-based army or boosted Loonion (barch works too, but hard-hitting armies with giants and loons can obviously hit harder and go further into bases). Let's assume you're using loonion: the 500 DE loot bonus should make up for your minion cost. When I was loonioning in Masters, I nexted a lot and only went for 3000+ that I could get, but if you're boosting, it's better to just go for 1500+ that you can get, so you won't have to next too long and you'll get lots of raids in. You will also find decent gold in Masters; 120k loot bonus for every raid you win, and a lot of people have full coffers up there, so you'll be getting some walls done too
So to recap, loonion in Masters 3 is your best bet for DE, but if you want to focus on Gold/Elixir (it will be heaven for those because of the 1-gem boost), try Gold 1 and Gold 2. Oh, and I forgot to mention, there are a good amount of juicy drills in Masters (that you can get with barch, after some nexting), and there will definitely be more with the 1-gem boost, especially because drills fill up extremely quickly when boosted.
P.S. Curious, are you a desi? Or does that have nothing to do with your username?