i'm still a wing chun student.. which i've been told is the base for bruce lee's jeet kune do..
i can tell you krav maga is very badass.. i believe it was created by imi lichtenfield, incorperating alot of street fighting.. i recall the name as he was an instructor for the israeli defense force..
it's supposed to be applicable from points of disadvantage..
if you decide to take this i'd think it'd be fruitful to take another martial art also..
jeet kune do might not be ideal, as it's principle is based on the freedom of not having a style at all.. "absorb what is useful, reject what is useless".. altho i find it great for philosophy.. you could base jeet kune do on grappling or striking, or both.. whatever you find the most useful.. also, studying jeet kune do you'll be encouraged to study many other styles.. you should make sure you have a decent amount of time to dedicate to it, both physically and mentally..
and aikido.. the oldest developer i'm aware of is morehei ueshaba.. the whole point is to avert any attack with minimal damage to your attacker.. it was developed that way, mainly due to ueshaba's religious beliefs, and respecting all life.. it's based on jiu jitsu, with less striking.. altho there are many violent throws and joint-locks that can do some major damage, if the force were required..
if you're leaning toward that, might i reccomend hapkido? hapkido gets its grappling techniques from aiki jiu jitsu, which in turn was the predecessor to aikido.. you'll learn to use striking and grappling techniques to compliment eachother.. it's a very crafty martial art, as any one of your movements could be setting up your opponent for an attack (a kick may set up a punch.. a punch may set up a throw, or a joint lock).. it's also famous for allowing you to control your opponent's body, somewhat.. by keeping them off balance, or moving them in directions you find more suitable to attack/defend from.. and a hapkido practitioner also learns to counter attacks using opposite techniques.. i believe you also learn a bit of pressure point targeting..