@Senf Zdravei. Can you share what models you have used. What power?
Sure, I have a CD-2B. But to my understanding, the BT-2B is much the same, just that it sports an analog temperature dial instead of the funky LCD display.
Unfortunately, they list it under discontinued products on the JBC site, however Weidinger still has them in the online store for 198,-
The heater is in the tip itself, it's why they're so fast (and why the tips are so long, they look like ballpen refills). It goes to standby, you pick it from the stand and before you reach the PCB that you want to solder on, it's at 350°, no problem. You pull the tip (without powering or cooling down, no pliers or tweezers, just pull it by using that metal catch thing that's built into the station) and insert a new one (just push the handle down on it) and the same thing happens: Before you reach the spot you want to solder on, it's up at 350°, it's just awesome to work with.
I have no idea what the power ratings are (and I am too lazy to look it up), but it sure is more than enough. The LCD has a little gauge that shows the power that's currently pumped into the tip. Most of the time it's at < 10%. When I hit a real big copper pour, it might go up to 40% or something. I've never seen it going to 100% but I've never seen it cool down when working on stuff with big thermal mass either. Also, the handle itself is not as clunky as the others, it's more like holding a sharpy. It's really just like all the little problems that bugged me with other stations are simply gone.
They have a special hoof tip that comes in two sizes, it keeps a little reservoir of solder right where you need it. The smaller one is great for soldering fine pitch SMDs. Just use some flux and drag along.
Other than that you'd probably want a smaller and a larger chisel type tip, which came as the factory default packing in my box.
Edit: On the other hand, I've been using an Ersa Analog 60 for years and it's not that I didn't get anything done with it. It's just once you got to know something that much better, how can you recommend the worse one?