Have a 13 sear 5 ton Ruud system with R-22 (2004) that has a leak in a u bend on the condenser. Got an estimate to fix for $1125, replace with R-22 unit for $3500, replace with 14 sear R-410a unit with new hard lines and txv/coil for $5300. Need some words of wisdom on what I should do. Or even a competitive estimate for the options above from OSA brethren.