That makes sense if you just want one unit in your kayak.
if you were ADDING a standalone unit for live imaging, I do think Garmin is quite a bit ahead with their offering.
I run Mega Live and have been satisfied with it as I have all Humminbird / Minn Kota products. As far as a stand-alone system is concerned, I actually don’t think it’s all that important to have the other graphs integrate with the live imaging system. I already had a Humminbird unit that was capable of running Mega Live so I only needed the transducer. IF I had not already had a unit capable of such, knowing what I know now I would go with Garmin for live imaging as a standalone system and keep my others for Mega 360 and Side imaging.
As far as deals are concerned you missed out on about the best deal of the Spring with Bass Pro Marine sale. You can get up to 5x bonus points back (example: $750 back with $3,000 purchase).
If you are interested in a USED Mega Live, I see them floating around the $1,000-$1,200 range and see the Helix 9 for about $1,000 on other fishing sites with buy/trade/sell avenues.