Hi, this is my first post so please excuse my lack of knowledge...I
have a 10-year old home with builder grade Lennox, 10 SEER. 2-ton unit
downstairs, 2.5 upstairs. Over the last 2-3 summers, the downstairs
unit has needed refrigerant and the last guy here determined the evap
coil has a leak.

The same outfit estimated some items today and as I am very new at this
I wanted to try and get some advice, and also ask if these prices are
in line. I am in the Atlanta, GA area.
My choices:
1) Replace evaporator coil only with like unit, $950
2) Replace evap coil (upgrade 2 ton to 3 ton) plus replace external
unit, all taxes, materials, etc, upgrade the 2 ton outside to 2.5 ton
(I think I need this as have never been happy with the power) : $2700.

Parts will be Lennox, 11 SEER (13 SEER is about $1000 more so am
thinking this will do as it is is till an upgrade from 10).

Should I get more quotes? Or is this a pretty fair figure? The company
comes recommended from a neighbor who has been in the construction
business (but is not affiliated).

PS Had posted this to alt.hvac and was advised to try this forum.
Thanks all!