The arrows are too small

[simonbcn]

In the mode with separate download/upload speed in bps the arrows are too small:

I think it would be better another icon like ▲ and ▼ or something similar:

Another option ⬆ ⬇:

Or this ⮟ and ⮝:

Or 🡳 and 🡱:

What do you think?