more on the dual beam. in weed beds you'll want narrow band. in shallow water w/o weeds you'll want wide band. in deeper water you'll want narrow band.
this is the time of year for deep discounts. if you can't find any, marcum always has 10% off for signing up with them.
you sound like me and that is you worry about missing features you might not know if you'll want them until it's too late. because of that, i suggest you try to get a deal on a lx6. once you get into the digital series you won't be missing any features other than gps if you don't have it on your phone or stand alone and if you use them or not.
only difference in the lx6 and 7 is screen size and 1/4 inch target separation. the lx7 can be upgraded for 500$ into the lx9 tho if a camera sounds like some else you might want on one screen later on. that was the way i went and started with the lx7 for those reasons and now own the lx9. going this way also saves some upfront money to get into their lx7 digital series. the lx6 can not be upgraded to the lx9.
also, this "brighter" feature. i don't like flashers and not being able to turn down the bright flashing lights at nite is the pits. digital displays allow you to turn down the backlight to 10%. it is so much more comfortable for low light and night time fishing.
they all come with a 2 year warranty. if you get the lx7 and upgrade it into the lx9 you get another 2 years.
i just wanted to point more out for you while the deals are still hot.