The good news is that you seem to have learned about the value of having good audio, which is the first step to getting it. The second step is figuring out what has been wrong, and then what you can do about it. Many people often want to blame things on low quality equipment, which seems to also be your train of thought, which is tempting since it's easy to fix and speaks to the gearloving side of many filmmakers. It is true that good equipment can make a very noticeable difference, but it's usually not as big as you might imagine - as long as you are using the right tool for the job. This last bit is what gives a good sound technician his paycheck. Anyone can rent/buy good equipment, but a good technician knows what to use at every specific situation.
So, you say that you get the mic close, check the levels, and press rec. What is close in your opinion? How do you aim the mic? What environments have you filmed in? What are "good levels" to you? What format are you recording in?
After you know more about the different problems and choices a sound technician faces, THEN you can think about purchasing equipment. Read the stickies and borrow a few books on location sound. If you don't want or have the time to do any of this, then yes - you should hire someone who knows this stuff.
So, you say that you get the mic close, check the levels, and press rec. What is close in your opinion? How do you aim the mic? What environments have you filmed in? What are "good levels" to you? What format are you recording in?
After you know more about the different problems and choices a sound technician faces, THEN you can think about purchasing equipment. Read the stickies and borrow a few books on location sound. If you don't want or have the time to do any of this, then yes - you should hire someone who knows this stuff.