Anyone using an external estimating software with Acumatica?

Hi!  My company is in the service / construction industry and looking to get away from using Excel as an estimating tool. Most of the work is bundled or bid pricing, so need to use cost plus approach to come to quote price and would like to feed those quote prices plus cost build-up into Acumatica sales and projects.  Looking for some cloud software solutions, anyone using anything the love (or hate so we need to stay away from that)?  Thanks!!!