greetings... i've finally decided to take the plunge into self employment and have chosen lawn maintenance as my chosen profession. not having ever done lawn maintenance on a "professional" level, i am needing to know how to select the right mower to get started with... not wanting to set myself up for failure and not wanting to get in over my head, can anyone please relay some information??? i.e. - walk behind or a rider and what size??? also, what is the difference between echo and stihl??? any information for this crazy individual would be greatfully appreciated!!!