My 24v. Minn Kota has been in service now (hard commercial service) for almost one year... Can't say enough good things about it... Hoping to get a solid, trouble-free three years out of it... but I'll be finding out one way or the other...
For what it's worth everyone that has or has had trolling motors will have stories of ones that didn't perform as expected - that goes for both Minn Kota and other brands... You won't hear many bad things about Rhodan since they're relatively new (and I'm told a bit pricey..).
The new Minn Kota Terrova w/remote and spot lock is very easy to use, holds it's position, and we're actually able to hold my skiff in the bridge shadows on station in current all night long - no problem... My only screw up so far was me losing my remote control one day (at the ramp or the gas station....). $190 later I was back in business...