I own a TH and AP - both from Banks. I've been using the AP seen in the initial pix since June [using Aqua Max 500]and have had no issues apart from a qty of pellets falling short of the pond which is about a 3 foot shot. The pellets sit, rot, stink and attract tons of flies...but you're all probably used to that - not sure if this is just an issue inherent to all feeders. Obviously this would be less of an issue once it's sitting on a dock, which will hopefully be installed next year. I will be setting up the TH next Spring and will compare performance. I do know the pricing on the AP was only 25% the cost of my TH.
No timer issues yet - seems they've addressed that issue successfully.