There is a huge difference between the RM2 and the cylone.
The cyclone is for Monday, Wednesday, Friday
The RM2 is for Tuesday, Thursday, and Saturday
On Sunday I vape another mod to remind me how much everything else sucks compared to the Reo.
In all honesty the RM2 performs awesome, looks great on the reo and personally I think that $40 ($43? idk) for a hand crafted RDA is extremely fair.
The cyclone is a bit more expensive if you can ever find a BF one and it works great. Personally I use the cyclone more but not because its that much better just because I own a Reo. Reo means fill your bottle and go and don't mess around with it too much. Just too lazy to take the atty off lol.
I am not into lung hits and all that "agro" vaping so I sold my cyclone AFC cap within a day but it's great for those that like to adjust the airflow and take big lung inhales.
If you have the extra bucks I would highly recommend you to get both. If you are lazy and hate replacing stuff on your reo make sure to also get 2 reos so you have one for each RDA.