I think you will be very disappointed. You say you are looking for a track frame with a 400 Euro budget. Then add photos of a wide variety of bikes, most are polished track turds (crap frames covered in expensive components).
The only true track frame set there is the Planet X, but how will you build it? Will it be with cheap components? it seems so with your 400 Euro budget. The rest of the components will cost far more than the frame (a HED 3 certainly does) and you don't mention anything about them. Also you seem have actually forgotten to actually ask a question. What is it you actually want to find out with this thread?
I think you will be very disappointed. You say you are looking for a track frame with a 400 Euro budget. Then add photos of a wide variety of bikes, most are polished track turds (crap frames covered in expensive components).
The only true track frame set there is the Planet X, but how will you build it? Will it be with cheap components? it seems so with your 400 Euro budget. The rest of the components will cost far more than the frame (a HED 3 certainly does) and you don't mention anything about them. Also you seem have actually forgotten to actually ask a question. What is it you actually want to find out with this thread?