Charles Zammit from Sky Power Energy offered a cheaper system at first but when I requested a better quality system he was happy to provide the panels and inverter I wanted. He kept me informed throughout the process and the installation by Robert Kirkpatrick (the electrician) and his offsider was very professional. The total time from receiving a quote to installation was only two weeks. Everything went very smoothly and I can recommend Charles and Robert to do a hassle free professional job.