As mentioned MC makes good stuff as does OME, AEV, Teraflex, Rancho, etc
Your budget and actual use can (should) dictate the choice. The Rancho 2" progressive sport lift is a fraction of the MC cost and can be DIY'd as an install project. You get what they advertise. I didn't check to see if they are out with a lift for your JL yet, I know they have it out for the Rubicon and there are guys that have installed it on Sports. It fits, it just goes ^^up more like 3.5" than 2".
That is a bug-a-boo of mine. Like the Mopar, says 2" goes up more like 3.5".
I guess that is "supposed" to be an unexpected surprise...
Depending on how much wheeling you have done, you may want to do some with your new Jeep and see how it does stock...
The MC is more $$ than you need to spend IMO and is probably what the shop has/does and profits from (not a bad word).
As for gearing - no comment. That is a S-storm topic and one I have weighed in on many times and don't bother anymore.
35's are a great size. Do anything/everything most need them to do. The march of size is a never ending journey. I remember when 33's were the holy grail, now they are viewed as donut spares.
As far as "cosmetics" go.... I stopped wearing them (too expensive) lol... Too subjective a topic BUT...
Too much lift (too much gap) looks like ass IMO. A 2" lift w/ 35's on 17's is a great combo all the way around looks as well as function and keeps the C.O.D. low (that's coefficient of Drama) warranty etc.
power, mpg's, breakage, ride, handling etc.