Halo- slightly faster bps, normally sits about a quarter inch or less lower than the evl2.
evl2- 40-60 bucks cheaper. rounded design has been called ugly but ive had bounces off my evl that woulda broken on the halo. can combat the higher sitting by cutting down the feedneck.
personally, as you can tell, i prefer the evl2. the eggy has saved me with a few bounces that easily would have broken on the halo. that and since the eggy is a little cheaper isnt all that bad. i shoot a tequila matrix and i use the evl2. havent had any problems.
Poptart