I hear you on the being taken advantaged of. The newest receiver that I think I would consider is a TopCon, Can go VBS, HP, or RTK with it, and you can use it wireless. Thus no wire or cable needed, in the cab, a little easier to swap vehicles. Plus I think you maybe able to buy blocks of time for the HP, like I do this with SF2, sometimes only buy the $400 sub. for my planting window and rest of year run on WAAS. Or just have enough high accuracy receivers for the critical machines and swap cheap WAAS for the unimportant operations.