first years, huh? Ouch!
I've used an Ameda purely yours double electric and love it. Medela is a good brand but I have no personal experience with it.
I'd also suggest an Avent Isis pump. I could get as much out with that (even though it's manual and single besides) as I could with my double electric and it only took 2 minutes more.
As long as you don't get another first years, gerber, evenflo, or pretty much "bottle name brand" electric pump, you should be okay.
Look for Ameda, Medela, Bailey, and Lansinoh (Does Amea and Bailey products under their name) pumps.
I'm sorry, I rambled. Let me sum it up here
Yes, Medela is a good pump! Just make sure you get "enough pump" for your needs.