I agree that you can get very long flight times on electrics w/ lipo batteries. My TM will go for 40mins (!). You get sick of it before that. My larger brushless models fly about the same time as a glow plane, 10-15mins. But a second flight requires a second battery or a 1 hour+ wait. So I have a few different planes and several batteries. Lipos are expensive tho, at $20-75/battery for typical configurations.

One BIG advantage to starting with electrics is that you can go to any nearby field and fly on a moment's notice (schoolyard, empty lot, etc) as long as you have some charged batteries. Much easier to squeeze in flight time if you have a busy schedule.