Got the Springer RDA a few days ago...its pretty surprising IMO.. This was probably the easiest install I've ever had with a RDA as it uses automotive grade springs to push the posts closed, you push them down and just insert your coils. I was skeptical that they wouldn't have enough pressure but man these things are firm as F [email protected]!! I tossed some 4 Clapton Cored Aliens inside in less then a minute flat and had no connection issues which I was impressed with. The domed topcap, goon tip compatible, 10+mm juice well and airflow options make this a great inexpensive option for people wanting a simple and reliable vape.