It depends on what is available around where you live.
160€ sounds a bit too much for either of those kits, similar sort of money can get you 2400C11 rated low-profile Geil (Evo Leggera), G.Skill (Ares) or TeamGroup (Vulcan).
You can also try DDR3-2400 with 11-13-13 or 11-13-12 at 1.65V. Going lower in timings at 2133 or 2400 will require Hynix MFR chips (is what you have on ver5.29) of better quality, which I am not sure if you are going to find on 1600C9.
It shouldn't damage the memory as long as there is any airflow around it.
If you can tell the version number of your kit (ver x.2x, written on the sticker) then it could become clearer as to how to get better results of out the kit, else it is just trial and error.
All depends on the version of your modules.
ver4.13 would normally run 9-10-10 at such freqs and voltage, so by the failure of 10-11-10 I would assume that you have something else.
If it's ver4.21 then try 10-10-11. If it's ver5.xx then failing 10-11-10 is not a good sign, most likely your mem is already at its limit.
What is the version number of your sticks? (written on the stickers)
If it's ver4.xx or 5.xx then you might also be able to run DDR3-2133 with lower voltages and/or timings, or even reach DDR3-2400.
Otherwise (ver3.xx or 8.xx) just try lowering the voltage at 2133 while it remains stable.
The best memory you can get on your budget (using the site) would be 2666C11 HyperX (link) but since AMD cannot run memory at DDR3-2666 you would have to manually downclock them to DDR3-2133 or -2400 (with tighter timings).
The best price/performance option would be 2400C11 HyperX (link) which, also, might require you to downclock it manually to DDR3-2133 (with tighter timings) since not all AMD chips can reliably run DDR3-2400.
If you just want something for plug and...
1.65V is perfectly safe for any platform out there and should not be causing any issues.
CL9 will be faster than CL11 at same speeds, but you won't find any 8GB modules rated 2400 CL9. If you're comparing 1866C9 and 2400C11 then the latter will be slightly faster.
Thing is, you can easily make 2400C11 rated kits run 1866C9 specs, while the contrary need not be true. So with price difference being so small, 2400-rated sets are a better choice overall.