Need community opinion. lots to digest here, but should a review and critique of these units exist somewhere?

1) Regional Pool service company wants to put the sta-rite in and charge me $2,750 installed, includes $50 removal fee, for a unit that runs about $1600. Im thinking I buy this outright and have my plumber (neighbor) install. Seems too steep to me. Starite boasts a composite shell, PMG combustion technology for 85% efficiency weighs less than 125 pounds, and a rotating top, LED indicator lights and 360 degree access to internals. Rust-Proof Duraglas Enclosure with 10 year warranty on that, but only 2 like most others on the parts. Exact Temperature Controls, Full diagnostics for troubleshooting problems

2) What about these other models anyone have any experience with them?:

*Tankless Inc. Model sp-24-4 98.9% efficiency electric. Europeans long have laughed at us for heating water we aren't using. (This will be the way of things by 2015). btus low though, at 82,000. 5yrs pump and electrical, 10 years other. pretty impressive but you have to have a cover, which I have. Can handle up to 100,000 gallon swimming pools, consistently maintain 84 to 89 degrees Fahrenheit even in the winter! guaranteed to cost less to operate, but no idea of the pricing.

*Lochinvar Energyrite Heater. 89% efficiency. Gas. 400,000 BTU's boasts much of what I know nothing about...Hot Surface Ignition, Air Proving Switch to check for blocked vents, two levels of self-diagnostics, one each for homeowner/service technician, Posi Vent Power Induced Blower supposed to provide proper burner operation, remote control. The combustion chamber uses Ceramic Tile for life. Combustion chamber is completely sealed to keep out wind and spiders. Ceramic Tiles . Outer jacket is 16 gauge galvanized steel. corrosion-resistant bronze header by-pass. 9.9 ppm Nox rating (adjusted to 3% oxygen). 3 yrs heat exchanger /2 yrs other parts. $1800

*Minmax Stainless burners, ceramic tile, 2 year warranty, hot surface ignition 86% efficient. Thermostat drywell to prevent corrosion? about $1300.

Heat pump. Im in New england, and have always been told heat pumps even the new ones are not going to get us into the 80's when the ave temp here in Mass is about 75 degrees.