I’m not a pro but here is my opinion.
I have used:
a vx1 guide series made by marcum
An lx5 from Marcum (owned was stolen)
An lx7 from Marcum
And own a flx28.
If you want a dial style flasher besides a couple push buttons the only difference between marcum and vexilar is marcum you can zoom in on any section of the water column. Where as Vexilar (depending on series) you can only zoom in on bottom 6 or 12 ft of the water column.
Now as for the “buttons” instead of “knobs”
I used my lx5 so much my buttons wore through.
This is why I like my vex.
The knobs seemed a little more sturdy.
My vex is the dial style brushless.
Now if you are looking for multiple profiles and want something more digital large screen them yes the lx7 is for you.
There are a couple things you need to know.
The lx7 runs at 4800 watts so if you fish like i do with other people it tends to put off interference on other peoples sonar and they could get upset.
Vexilar flx28 400 watts and doesn’t put off the interference.
Also the weight if carrying a long ways or hole jumping can be heavy.
Also you can update your interface online how ever if you get a bad update you have to wait for marcum tho come out with another update.
Cool thing is if you ever decide to use a camera you can upgrade the lx7 for $400 into an lx9 but remember its software so be careful.
Now if you look art target separation there is a big difference.
The marcum lx5 is 3/4″
The marcum lx7 is 1/2″
The vexilar flx28 is 1/4″
What Does this mean.
That is the difference between bait and fish and sometimes even the lure and bait you have attached.
While only 1/4″ difference between the lx7 and flx28 that can mean the difference between fish on ice or missing hooksets.
So I hope this helps.
In closing if you want a large screen with lots of options and zoom in multiple zoom range in the water column but weighs more go with marcum lx7
If you want a dial style great Machine that weighs less better target separation from a company that builds indestructible units go vexilar flx28.
Shakin’ hips and rippin’ lips
Tight lines