Krav Maga

I approve.

That art will train you to persist like a cockroach.

I train Krav Maga by one month an a half but I only attended three lessons so far. Classes are once a week and work is making me travel a lot so sometimes I cannot get there.
I like it! It's pretty practical, it misses the artistical aspect but the martial one is way stronger than in other disciplines.
I don't get this soreness however. Do you do any heavy conditioning in the class or are you sore because of the hits you're taking?
Our classes have litte conditioning (which I prefer, so it won't interfer with bodybuilding) and consists mainly in practicing the techniques, so we end up sore because of the many hits

No. Just twice a week - tuesdays and thursdays. At least for now, I think the advanced course has 3 times a week.

@BSDiego:
Our classes consist of:
- 30 minutes high-pace, no rest, "warm up", designed to literally exhaust you, so that the conditions you are learning/sparring in are as harsh as possible, and that the only thing that can keep you going is aggressiveness and adrenaline.
- Then we do a bit of sparring, learn 2-3 new moves.
- Then we have a stress training. One guy stands in the middle, and has to defend himself from attacks of three people, practically simultaneously. We rotate after 1-2 minutes each. It's stressful and exhausting.

But usually, at least according to my instructor, we do little conditioning.

My injuries are from receiving almost a thousand blows while sparring.

I don't train Krav in particular, but take self defense from a NYPD Lieutenant. We primarily operate from the SPEAR system but have done a fair amount of Krav and MMA type work here and there, but it's such a practicality and self defense oriented class that we hardly get into moves with 3 steps or anything like that. If it looks cool, it probably won't be too useful in an ambush  !
That being said almost all of our aggression drills are from Krav and they're Monsters, I love them! As for the pain I know exactly what you mean. I've avoided getting injured, but hardly getting hurt. Last class let's just say someone found my skin under their nails and I found a cut on my face. Not only that but I did a clinch stress inoculation drill where I needed to drive LT across the room at light resistance the first time, then medium, then max resistance (with bare feet on a hardwood floor, can anyone say OUCH!?) and directly afterwards my eyes were covered and I was yelled at while being walked through the room then told to open my eyes, was attacked by a student with a pad and got to have a great time striking back. Things seemed alright until when I was holding the pad for the next student I got a shooting pain in my foot that was pretty awful and I was worried I'd broken my foot, then got to be punched, elbowed and kneed at right afterwards  . Good news though, my foots fine and my face is almost all healed by now and I still love that class haha. Wearing shoes next time though (LT said I was allowed thankfully)!

@Paralysisxiii:
All combos, at least in Krav Maga, are useful - otherwise they wouldn't be there. Krav Maga has no 'traditional' or 'artistic' values like other martial arts.

The thing is, usually only the first 2-3 moves are essential, and the rest are usually very flexible.

@Furius:
I'm sure you could try another MA center/gym/course?

I would otherwise but there are only two trainers in my town. The other one trains the novices and the other one the more advanced group.

I happen to agree. Actually, that is something our instructor pointed out, that it's a military-based combat system, designed for both self-defense and assault, but we are only going to be doing the self-defense portion.

And I completely empathize why someone would prefer a REAL martial art over something like this. But personally, I've been bullied a lot since kindergarten, and I've been unfortunate enough to be in few extremely dangerous situations where I've almost lost my life. To me, Krav Maga is something that will give me confidence to go out on the street at night without fear again.