hey guys im in the market for a spotting scope. mostly for nature watching, but might take it to the range on occasion. would like to stay under $400 ideally. found a few on amazon, but im not up on brand names. without knowing any more than i do, i saw two that interest me... Alpen 20-60x80 for $367 Celestron 52252 100mm for $269 any thoughts on what brands/specs to look for and those to avoid?