Well, now that I've tested most of the bots, I've come to this:

akimbot works, starts to lag

hpb_bot works, is really not aware of the map(this might be caused through missing waypoint-files ;P )

nicebot is quite hard to get, I tried 1.0 and 1.2 and both crash, the former when I start cs(not compatible with 1.6 or steam), the latter when it tries to add bots to a running game.

Realbot has nice and easy installation procedures as well as a working activation/deactivation-system. Still the bots seem to have some difficulties with edges over their heads, they seem to think a lot about the terrorist spawn point on de_cbble and they tend to like to follow the steps of another bot(reminded me of a german expression "Entenmarsch" == duck march or something, non-idiomatic)

IvPBot seems to work and wasn't hard to install or I just forgot about that...It reminds me of PODBOTs. I'll probably stick to it, although it lacks the "botdontshoot" feature which is rather nice, since the bots are better practice targets than with jasonmode activated, because they do not have a slightly different hitbox due to their knife being activated and do not jump around to avoid my shots, which human players with guns don't do either.
I could imagine to try and add that option somehow out of the sourcecode of one of the other bots but I believe I will fail since I can't code and will have difficulty compiling the stuff.

I haven't spent a lot of time with RACC(I was tired), so I just tried once or twice to run it and I wasn't successful. Might be possible to get it running - I don't know for sure and my spirit is gone.

I can't remember but I believe some bot lacked the endround feature. I'm not too sure about that, might be the fact that I couldn't give HPB_bot any commands or something.

CU