For any becoming more popular hip-hop artist, there are two things you need to make sure you have: mic skills and hot beats. To a certain degree, beats are the most essential thing you need, because often times, people won't even care what you will be talking about if your beats aren't hot! I'm sure you know some rappers who get plenty of attention with limited skills since they get crazy beats, so it makes it that much more important when you are able really spit.
Deciding on the best type of instrumental on your song is also vital. There are all kinds of types of beats to choose from also. Old school, dirty south, colonial, west coast, trap, electronic and much more are out there to select from. so make sure you look for a style that works for you.
East Coast beats tend to have very compressed, "dirty" drums, lower tempos, 85-100 BPM possibly even and may incorporate pianos and strings. These kind of beats also frequently use samples of other music to flesh out the track.
West Coast beats will have very clean drums, lots of guitar sounds can be found, and very often the track has elements of funk music. The drums may be programmed to 'swing' and the basslines often roll like in traditional funk music.
Dirty South/Trap Beats have become popular now and so they usually don't use any samples whatsoever, done all through keyboards, drum machines. These tracks have very precise drums with extra focus on 32nd and 64 note hi-hat sounds to accent the beat. These beats uses very 'epic' sounding brass and string keyboard patches to make a wall of sound.
Also popular today is adopting techniques from European dance music. Rappers like Flo-Rida, Pitbull yet others can be heard rapping over track with heavy inspiration from House, Trance, Electro,Techno and other dance music styles to appeal to audiences in a club setting. These beats feature tons of bright, synthesizer lead sounds and often a relentless 4/4 beat driving the music activity the whole time.
Your music won't sound real if you work with beats that match. Take into consideration your audience, would you like to appeal to the clubs? This wouldn't really be the better choice to pick a down tempo, Pete Rock or RZA type beat having a tempo less than 110-120 beats per minute (BPM). On the other hand, if you need to appeal to the 'conscious' audience, it will not be the best plan to choose a 130 BPM will.i.am/Rick Ross sounding beat either. Ultimately, it's your choice though, to do what you may feel will help your music the best.
Of course, considering that the internet is everywhere, it could be much easier to download instrumental music rather than try to find a beat maker locally that can do a great job and earn the beat exclusively for you. Unfortunately, talent isn't distributed evenly across the globe, so if you live in, say, Iowa it's not as likely that you will find the tracks you are considering near you, no matter how talented you happen to be. If you are looking for hit beats to operate a vehicle your career as an artist forward, passing time finding a good place to buy beats online is a much better option. You should check to see the variety of beats they have got, and definitely investigate as to whether or not they can customize beats just for you.