I see no other reason why your torch died since your other corals were happy. I'd say it was either a sickly coral or they handled it way to rough at the store. I think you are ready for a torch. I'm not too well versed on them but I know they are an lps so I'm sure it would be fine.
I play acoustic and electric guitar I own 4 guitars currently and need more. I played the alto saxophone for a while but I stopped playing. I'm currently learning G.O.A.T by Polyphia on my electric.
I spent a little over 200 dollars on my 10 gallon nano. Excluding corals, fish and snails which were about 700 dollars. I changed my water every week when it was new and now I do it about once a month since it has matured.