You would probably be happier with the Eclipse. It has packaging that makes it look kind of old, but it doesn't skimp on areas where it can like the Badger airbrushes. That's the one thing I noticed when comparing my HP-CH (Iwata model below the Custom Micron) with the Sotar 20/20 (Badger's top end airbrush), that the Badger is rougher in the areas it can afford to be, like the threads and needle guides. The HP-CH is smooth the whole way through disassembling it, and reassembling it, and I can only assume the Eclipse is the same way. That said, the Badger airbrushes are not made to be disassembled often. The needle is the only part that is made to be regularly removed, and Ken (Badger's CEO) has specifically talked about this. They are supposed to be able to be cleaned without needing to be disassembled.
If you are already partial to Badger, however, it may be something you want to consider. From what I could see at a glance at your post history, you have a Chinese airbrush, which are largely hit and miss. Working or not, they are more similar in design to the Iwata airbrushes, so you may want to go for the HP-CS just based on familiarity with the parts.
Another potential option is the Sotar 20/20
www.amazon.com/gp/product/B000BROVIO (people call it a detail brush, but the same people would have trouble doing detail with the Medium 0.45mm or Large 0.7mm needle), which you can buy off US Amazon for cheaper than either airbrush (80-something euros). The big problem with that is experience. The Fine needle is extremely dependent on paint reductions, and that is something you learn from experience, making the airbrush horrible to beginners. You can learn with the Medium set (bought separately) though, which some people seem to forget. The other potential problem is shipping. Shipping to Spain may be impossible from Amazon, or it may be extraordinarily expensive. If you can't buy it off Amazon, the next cheapest price would be about 200 euros, in which case it becomes unreasonable (not really, 200 euros would be easily worth it, but it probably wouldn't fit in your budget).