I know... might be a touchy subject to some, but I really need to know. So I've had two 6100 tunze's for a little over two years. I keep hearing that the Vortechs are way better!! Is it really true? Does the same statement apply to the new Tunze's, like the 6105? One of my main reasons for looking at the Vortech's is their footprint/size/bulkiness. The tunze's are just too bulky and protrude too much in the tank. I do like the variable speeds that the tunze provides, and the compatibility with the Apex. Not sure about the Vortechs and if they will be supported by the Apex. Any suggestions?