I'm boat shopping. Been looking a Stratos. I will probably buy somehing in the 1998-2003 yr range. Can someone tell me what the diffs are between a 21 xl mag, 201 PE, and 21 SS extreme? Same goes with the 20fters. I think I've seen a 20 xl pro star to add to the list. Diff hulls? Diff options? which one is fastest. My last boat was an 05 Blazer 210 with a 250hpdi. thanks