Bought a 38/720 case almost 2 years ago and finally put it t' use today.  Now sparky motors are always great crowd pleasers but t' wow factors goes up significantly as t' size o' t' motor increases.  T' I37DM be t' biggest sparky I have flown t' date and it did nay disappoint!  Load and pround, off t' rail on a big pillar o' smoke and sparks with a really great echo off t' treeline which got quite a few Ooohs and Aaahs from t' crowd.  Arrow straight boost, just like a good tube fin rocket should.  Good drogue deploy at apogee, nay driftin' much up high but it appeared t' catch some lift and move away from t' line about half way down.  Good main chute at 500 feet and a nice landin' in t' field about a quarter mile away, easily winnin' t' loingets recovery walk o' t' day.  After downloadin' t' data from t' Perfectflight MAWD you can easily see where t' descent rate shallowed out durin' t' recovery betwixt about 1700 and 2200 feet.  Pretty cool.