You shouldn't see much change in temp from either of the debated brands. The evo's work we'll but do have starting issues. Some times the motor reverse's and also they take up allot of space. The 6025 will travel 36 also. Either one will do what ya want tho it's really upto your taste in your tanks presentation. I have a mp10 es w laying around if you want to try a vortech. I can lend it to you. Just be warned ,once you use one you'll want one ! Lol