Traffic Systems - ADS-B or TCAS?

[netsurfr]

Ok so I want to get onboard traffic and need some advice before going to an avionics shop. I have a plane w/ an 1 Aspen 1000 pro, an Aspen 500 mfd, xm weather (on aspens), 2 gns 430w, and a gtx 327 mode c transponder. I'd like to get traffic and was assuming ADSB would be the way to go BUT have my doubts about how well ADSB traffic will do considering most planes are not ADSB out compliant so I would be relaying on ground stations relaying traffic to me and my understanding is the lower you or other targets fly (pattern or on the ground) the higher the chances of not being picked up by radar and therefore won't be reported. Additionally you need line of sight so mountains can block traffic as well. This is supposedly where TCAS is supposedly better as your plane actively interrogates other transponders and does not rely on ground radar to identify traffic.

Are my concerns valid with ADSB? I guess I'd prefer to go the ADSB route as this would be taking care of traffic and the 2020 requirement but just not sure how well traffic works via ADSB? If I should consider this route vs TCAS what's the best method given my existing equipment? Would I be better off with one of the aspen compatible solutions that can provide ADSB 978 in and out solutions or would I be better off upgrading to a gtx330es and a ADSB in box?

Any thoughts/experiences that can shed some light here?

 

[rrc1962]

 

[netsurfr]

 

[msires]

 

[netsurfr]

 

[PaulR]

 

[Orest @ CYFD]

 

[flyboy1950]

 

[kshaw]

 

[rrc1962]