In my experience, it's good to try both at some point if you're new to the vertical coil cartos.
It's just too hard to predict what someone else will like.
The 2 Ohm LR ones offer a little warmer experience. They shouldn't scorch the flavor as long as you keep the carto wet. Unless you're particularly sensitive to hot stuff....you'll probably like these.
Some folks can't stand something hot on their lips and elect to go for cooler running cartos, or use an insulating drip tip (glass, ceramic, or delrin) to avoid that warm sensation on their lips. Not that the 2 Ohm boge is very 'hot'...it just depends on your personal sensitivity to it.
You also might find that some liquids work better in one than the other for you. I like the darker sweeter liquids to be hotter, and the fluffy fruity stuff to be cooler. That's just me though....
The diffierence from a 2 Ohm to a 2.5 Ohm carto isn't going to be so huge that you won't use up whatever you decide to
buy/try first as you learn which products you truly prefer the most.