I've been running a Garmin 93sv unit & Livescope (Lvs32 tdx) for several years & it's been all I needed. My buddy, slabeye, had the same until this year, when he went to the 10" screen. He's not all that impressed with the larger screen ... FWIW.
My Garmin unit (w/o tdx) and the Livescope bundle cost me $2200 (BBGmarine deal on this site). I didn't get the tdx for the Garmin because I already had a Hook 7 mounted at the bow & it's tdx is on the trolling motor. The Hook is now used mostly for maps/GPS coords.