But operationally is there a huge difference?

Not really. Both work. I have a 910 and 847 at home, and use an 857 and 817 mobile.

On another subject...

Are eggbeater antennas a good option for someone just starting out? Something like M2's setup?

Not really, in my opinion. They might work, but you could have a much better antenna system for less money. M2 short starter series yagies tilted up 15 degrees, a tv rotor, and a UHF preamp would cost less than a pair of eggbeaters and work twice as well.

73, Drew KO4MA