Ok, so at the moment i am loving my Judo and am curious to experiment with other martial arts.

The martial arts available to me are.....................

Systema (being taught by the 1st official systema teacher in my country)
Karate (very basic form of karate)
Aikido
Kickboxing (I've always been interested but I'm not sure i can afford the equipment just yet)

These are all being taught at my local Judo club. And i would like to choose one.

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Also, a martial art i am torn between.........My friend wants me to start doing Goshin Jujitsu with him. (i will be choosing 1 of either of these two along with my other martial art. )
and.........My brother wants me to start Gracie Barra Jujitsu with him

I can only choose 1 form of jujitsu . GBJJ is tilting my way at the moment as im a good fan of MMA and Anderson Silva.
Oh and does anyone know if theres a difference between Brazilian Jujitsu and Gracie-barra Jujitsu. Typical but i'm not to sure.

Please post your opinions on the matter, what you'd recommend, why, and your experiences with these martial arts.

Thanks

Gracie Barra is a prestigious group of gyms instructing brazilian jiu-jitsu.

^^^ yup, Gracie Barra is one of the top Brazilian Jiujitsu groups. I'd definitely check this one oiut - but then again I am biased, I train at a place linked to Gracie Barra.

Try something different.

The systema and aikido might be fun.

Systema looks really corny.

Karate depends on the style. If they do continuous contact sparring it should be good. Kyokushin and it's derivatives are your best bet for this.

Aikido is hit or miss like Karate. Shodokan (Tomiki), Yoshinkan, and Iwama are the only styles I approve of.

Kickboxing should be good as long as it's not the cardio form.

Goshin Jujutsu is a pretty vague term. But it's usually a sloppy mix of Aikido, Judo, and Karate. I'd just spend my time studying the parent arts.

BJJ is almost always a good bet. The price can be steep though.

QFT

I attend a Gracie Barra and in no way, I assure you, is it prestigious. In fact, despite a nice facility, I'd venture to say the instruction is mediocre.

You guys should look in to giving Krav Maga a try. http://www.kravmaga.com/

It really depends what you're looking for. Do you want something totally different or different enough that some principles carry over and improve your Judo?

BJJ will help with your Judo for obvious reasons. Aikido will help too, especially with ukemi because some of the throws can be pretty crazy. Joint locks as throws? Check. Waki-gatame driven to the ground into face down pins? Check. Strikes that result in free fall projection throws? Check. And throws as high as any seoi-nage or kata-guruma (Aikido has type of kata-guruma too btw) done free fall without tori supporting one arm? Check.

You'll learn a lot about maai (combative distance), excellent foot work, taisabaki (whole body avoidance), and maintaining structure during throws. I'm pretty new to Judo but had a revelation when a fellow Aikidoka & Judoka explained something to me about maintaining body structure during Judo kuzushi in Aikido terminology - to maintain my body triangle. From what I can tell this isn't explained often in Judo because you almost always have 3 points of contact during the tsukuri and kake in Judo, but in Aikido you rarely have more than one point of body contact so maintaining proper body-elbow-hand structure is absolutely vital to executing the throw.

Will any of this transform your Judo over night? Probably not, but it will give you a few new angles to look at Judo from, and be fun to learn for its own sake.

You can take some things away from the other arts too, like say good footwork from Kickboxing, but not even close to the stuff you can apply to Judo from either BJJ or Aikido.