Haven't tried any tanks since the original Protank, so I can't help you compare there really.
The RSST does have a large amount of airspace under the top cap, and this more than likely does hinder the flavor a bit. Like others have said, you can by aftermarket top caps or chamber reducers for the RSST but then you are getting up there in price a bit (close to the price of a real DID).
All of that being said, the flavor on the RSST doesn't lag far behind others I've tried, it's just a bit different.
The difficult part about a gennie with a small chamber is that often times everything ends up very close together under the top cap and it can be frustrating getting the wick and coil working together correctly.
I say give the RSST a try if you want to try out a mesh wick in a genesis style atty, then invest in a more expensive reduced chamber atty later if you find you like working with mesh etc.
The RSST does have a large amount of airspace under the top cap, and this more than likely does hinder the flavor a bit. Like others have said, you can by aftermarket top caps or chamber reducers for the RSST but then you are getting up there in price a bit (close to the price of a real DID).
All of that being said, the flavor on the RSST doesn't lag far behind others I've tried, it's just a bit different.
The difficult part about a gennie with a small chamber is that often times everything ends up very close together under the top cap and it can be frustrating getting the wick and coil working together correctly.
I say give the RSST a try if you want to try out a mesh wick in a genesis style atty, then invest in a more expensive reduced chamber atty later if you find you like working with mesh etc.