i'm fixing to purchase a new spotting scope for hunting out west. i've been hearing lots of good reports on the vortex skyline and nomad. i'm leaning toward the nomad 20-60 straight eyepiece version. last year i used a leupold seqouia 15-45. i was not very impressed, especially at the higher end of magnification. very grainy. so how does the nomad compare to others in its price range. i would like to stay under $350 for a scope, mainly because i only use a spotting scope for 1 week a year.