The 6080.500 is about $55, this is fine, if your glass is 1/2" or less, this is what I would do, but please double check the glass thickness, usually 180 is the biggest standard tank with 1/2" glass and a 210 typically has 5/8" or 3/4".
However, if your glass is thicker than 1/2", I would personally not consider the stronger 6200.500 a worthwhile investment at $120, when you can buy the new model 6085 which includes a magnet holder for 1/2" for $180 and for an additional $35 it can be upgraded to 3/4".