What's the weak link in my system?


     I've pieced together the best budget system I could afford over the years but I'm just not thrilled with the sound I'm getting. Can anyone help me identify the weakest link (s) in my system so I can upgrade? I only have the budget to upgrade one piece at this time. I'm most interested in listening to vinyl.
Currently Configured:

Pro-ject Genie 1.3 Turntable w/ Sumiko Pearl Cartridge
Bellari VP 130 Phono Pre w/ Tung-Sol Tube & Replaced Power Supply  
Marantz CD 6006 CD Player
Parasound P3 Stereo Preamp
Parasound A23 Power Amp
PSB T6 Platinum Speakers
Bluesound Node
AKG K702 Headphones
Audioquest Daimondback Interconnects
Audioquest Rocket 33 Speaker Wire

Also Have:
NAD C235BEE Integrated AMP
Monitor Silver RS6 Speakers
Marantz SA8260 SACD Player (Used to sound great but doesn't work consistently - not sure if worth having repaired)
Musical Fidelity V Can Headphone Amp


So.... I think I have put together the best possible system configuration using what I have. What would be the weakest link / first to upgrade? Turntable? Phono Pre? Pre-Amp? Suggestions of products to upgrade to without breaking the bank? I've accumulated a bunch of stuff but I'm really a novice so any and all feedback would be greatly appreciated!   

jdm11
I would say the best way to describe what I don't like about the sound is:

- Vinyl playback is good on Jazz / Jazz Vocalist Lps (Ella Fitzgerald, Billie Holiday, Nat King Cole; Bill Evans, Sonny Rollins, Charles Mingus, Art Pepper) and Blues but Lps like Beach Boys Albums where there is a lot going on & on Rock Albums the sound seems a bit muddled and distant. 

- CDs sound a bit harsh and thin.

- I'm looking for a more "3D" kind of sound with depth and warmth but clarity as well (not muddled or fuzzy).

-Bass could use more punch but this isn't my biggest problem.

Also to rule the sources out as a cause my vinyl collection is quality - a lot of Analogue Productions, 45 RPM, Mofi, ORG, etc. I've invested a lot in the collection over the past 15 years and I just don't feel I'm getting the best out of it.

Thanks!           
Well maybe what you are hearing is that vinyl is a challenged medium. Noise, distortion and dynamic range are all far less than what real music needs, or than what digital sources can deliver. Hence a muddled sound.
Marantz cd players are excellent, so if the sound is still harsh, it is either your expectation that is wrong (real music can sound rather harsh), or the speakers, or the hard acoustics of the listening room.
In any system the weakest links are not modern electronics, but the speakers and the room. If it is the speakers, try auditioning Harbeths. They excell at avoiding listening fatigue.
Narrow opinions on everything do not equal expertise at anything. Quite the opposite in fact.

Dave
Hard to tell. Do you use any power conditioner?
I would probably get motor controller for the turntable first, then think about trying some passive or active power conditioner, then better cartridge and phono stage, then cables and power cords.
Thank you willemj interesting observations re: expectations. There could be something to that but I have to say when the vinyl playback is good - for ex. Hugh Masekela Hope 45 RPM - I think THIS is what music is supposed to sound like! I prefer the sound to CD even though the Marantz is, as you mention, well regarded. Which makes it all the more disappointing when quality pressings of  Pet Sounds or Sgt Peppers vinyl sound distant and muddled; hence my confusion. I'm wondering if one or more of my components is limited moreso than the medium. I'll def look into the Harbeths thanks for that. My listening room is set up the best it can be and I don't have an option of switching to a different room (kids!).