Vape Pen Assistance!

Hello everybody. I've finally decided it's time to move from flower to concentrates. I recently purchased a VERY cheap USB-chargeable vape pen and I've been using it with some oil cartridges from Bhang. It works okay, but I really want to up my game and purchase a legit pen that actually offers a decent draw. The hits from this cheap pen I have are mediocre at best and very inconsistent.

I've seen all sorts of pens out there on the market, but I'm looking for a top-of-the-line option that will accommodate my cartridges that have the 510 threading. I'd like to find a pen that can be used for cartridges of oil, shatter or wax. Does this make sense, or am I better off getting a pen where I just add my own concentrate without the use of cartridges?

Thanks for the help!

i used the O.Pen 2.0 varied voltage setting for my CO2 oils. For only $35 its real nice.
I just got an email on a special offer for the pen and the case for $39.99 , so i might get another. Things i like about its features are

1. on and off switch
2. 4 voltage settings, 2.4 to 4.0 the last being for wax. shatter when you get the extra attachment
3. after selecting your voltage setting you can hold the clicker and it will heat up your oil for you before you pull.
4. recharges super fast!