Looking at the 5" versions for both. They are both new on the market and the Lowrance website has the price listed as $450. Is this the price without maps? I'm asking because the Lowrance has sidescan and a touchscreen, yet the Garmin is $500. $50 more for no touchscreen or sidescan? I'm aware the Garmin has great maps but is that worth no sidescan? Which do you guys think is better? Trying not to spend more than $500.