The 106sv shines on SI/DI when used with the GT-54 or GT-56 as it has one of the best pixel densities of any unit Garmin sells…Its debateable if the screen image is better on Livescope as the GLS10 dictates the image output, not the head unit… The processing speed of the 106sv is also alot better, you’ll notice this on boot speed, maping and just basic navigation through the different screens.
I don’t see any benefit in waiting for the eventual Head unit sales including the GT-56, you likely won’t see them until next Black Friday and its alot cheaper to buy the current offer and resell the GT-54 and then buy the GT-56 separately…
When I purchased my 106sv during last year’s BPS Sale, I sold the GT-54 it came with for $150 and then purchased a brand new GT-56 for $300…The GT-54 private sale market is completely flooded now, so don’t expect that return anymore, but its an option…