My argument has remained the same. The Ethereum reference wallet is by far the most vetted wallet. Use that. (And yes, I use the Bitcoin Core wallet.)
If you used Parity because it has 1,700 stars on Github and was written in Rust, you're doing it wrong. Stop. You can't assess merit based on what everyone else is doing. The only hope in a situation where you don't know what you don't know is to stick with fundamentals. And even then you could still get burned. But that hasn't happened yet, which is why it's the least risky move.
It will take at least a decade for the cryptocurrency ecosystem to stabilize. Why risk anything when you don't have to? Arguing "I don't use the Bitcoin Core wallet because it's less convenient" is exactly that: an unnecessary risk. If you're set on jumping into this world, at least do it safely.
Parity is one of the core Ethereum clients, it is vetted just as much as geth is. The code that has this mistake was written by Ethereum co-founder Gavin Wood, in Ethereum's programming language called Solidity which was made by Gavin Wood as well.
I know you got burned in MtGox, but this has nothing to do with third parties or storing assets in some insecure manner. This is a fundamental issue with Ethereum and its community.
If you want to be safe, don't buy an asset that's being protected by a couple of young and naieve idealists that just care about putting their ideas on the market.
popularity does not correspond to vetting (see the recent parity multisig vulnerability), and highly reviewed software is not necessarily popular (how many people know about libsecp256k1?).
If you used Parity because it has 1,700 stars on Github and was written in Rust, you're doing it wrong. Stop. You can't assess merit based on what everyone else is doing. The only hope in a situation where you don't know what you don't know is to stick with fundamentals. And even then you could still get burned. But that hasn't happened yet, which is why it's the least risky move.
It will take at least a decade for the cryptocurrency ecosystem to stabilize. Why risk anything when you don't have to? Arguing "I don't use the Bitcoin Core wallet because it's less convenient" is exactly that: an unnecessary risk. If you're set on jumping into this world, at least do it safely.