Now I want to upgrade my bass. I write mostly R&B, Soul and Country while doing some old Motown covers. What type of bass should I be looking at for recording purposes. I need something with not a lot of fret noise, thats for sure and low hum if thats possible.
That's definitely a great start.I'll look into that also. I have 4 basses now. 1) The new Fender Player Plus Jazz I just dropped $1300 on 2) The Korean Ibanez ATX clone 3) My Harley Benton JB-75MN NA Vintage Series and 4) my old Yamaha RBX 250.
For Motown, try putting flatwound stings on your Yamaha RBX250. Alternatively, you could try soloing the front neck pickup on your Jazz with flatwounds while rolling off the highs - studio legend Joe Osborne used that setup. That would at least get you in the ballpark.
The RBX is a decent bass as are most Yamaha Taiwanese instruments. I have a RBX 360 model I picked up for cheap for playing gigs while experiencing some back problems. (They tend to be a pound or three lighter than the Fender equivalent.) Components on the lower-priced models tend to be a little cheap in quality but serviceable, though you could always shop for a quality pickup replacement. I'd probably stick with the stock bridge and tuners.
The Jazz is a great choice! Not familiar with Ibanez ATX - do you mean ATK? The ATK is similar to a Music Man Stingray, which would be my suggestion for a different style bass. If a Stingray is too $$ you could always look for a cheaper Sterling version made in Indonesia. (In parallel pickup mode there should be little or no noise.)
Only other bass suggestion for a different sound is something in a Gibson or a semi-hollowbody like a Hofner or something. At this point it might be best for you to listen to different recordings and pick out bass tones you like. Chances are you can get very close with your current stable; if not, this forum can help you nail the sound. Get a 5-string if you like those low notes below E...