Maybe a little info will help get some comments going.
Allegro 2x chain ring 50/39/30 cassette 11/32 9 speed wheel 700x35c
Explorer 2 chain ring 48/38/36 cassette 14/34 7speed wheel 26x1.95.
Looks to me like the Allegro will be faster, but will I be giving up to much grunt for an old man to handle

I am 64 1/2, 245# I ride a 10 mile root most every day. I use the 36 chain ring with the 2nd lowest gears to get up some of the hills around here with my Explorer.
So what do you think.