The PD 9260 is a 3-stage + converter 60 amps max out
The Parallex 7345 is a single stage with max 45 out
The programming for the 9260 (Wizard program) is, in my opinion, the best for Flooded wet cells.
I also have a Xantrex Inverter with a fully programmable charge pramaters.. I like the Wizard program better.
The Wizard will go into boost mode (14.x volts) if it sees the need then stay there with slowly dropping amps through absorption finally it switches to float (13.x) and after 20 hours of float will kick into 15 mintues of equalize.. This has some serious advantages to the battery life from what I can tell.
I do not know if the IOTA IQ-4 does this last bit or not but the Wizard does.
That's why *I like my 9180+wizard (same as a 9280) over the programmable inverter.