No brainer between those two conicals...The CF10. I own a CF10 and was looking long and hard between Spike and SS Brewtech. base costs, the CF10 is cheaper but the BME includes the chiller. After adding my accessories (extension legs, bracing shelf, racking arm, and casters), my CF10 was about $145 more than the base BME but it made it worthy to me because:
1) The CF has welded triclover ports. There are no weldless fittings like with the side chiller and sample valve.
2) The chiller is included which is an advantage with the BME, but I didn't like how it's mounted from the side with weldless fittings. The chiller for mine is going to be an additional cost as I don't have it, but it mounts in the 4" top with triclamps vs the side.
3) Better sample valve with the CF vs BME
4) CF 4" opening for the top vs the 3" for the BME.
5) CF can be used for pressurized fermentations.
6) Larger dump valve on the CF (2") vs the BME (1").
About the only thing about the CF that I don't like is the racking arm is optional. IMO, that should be included. I really liked SS Brewtech's 14g unitanks, but they are much more expensive as you're buying everything included at once. I'll have as much in my CF10 eventually, but I like how I can spend on the bare bones for the time being. That, and I just didn't like the way the chillers are mounted from the side with the BME conicals. That's what pushed me to Spike in the end.