motoman,
IMHO, your advice is spot on!! I too used a Ryobi 790R for 10+ years and right now my son is still using it. The original SpeedSpool was the easiest trimmer head by far to replace the line in. The ONLY problem I had with the Ryobi was that the doggone 10% ethanol gas destroyed the fuel lines and they had to be replaced and the shop that did the work didn't know what they were doing when they replaced them. Still "leaks" a tiny bit but runs well and all of the attachments that the detachable straight shaft accomodates makes it a very versatile trimmer as well. But in my wisdom(or lack thereof:0) I decided to get a 4-cycle straight shaft trimmer and ended up getting a Troy-Bilt at Lowes(same place I bought the Ryobi). Main reason.....also has DNA from Ryobi(most likely built by them) and the attachments work and I could use the spare SpeedSpool I had bought for the Ryobi. But....the Troy-Bilt(even though quite a bit more expensive) was not the same quality components as the old Kia(I mean Ryobi:0) 2-cycle. Just after the warranty expired, so did the drive shaft(twisted off where it connects in the head). I ordered a replacement from Troy-Bilt and hope it fares better. All that being said, I sometimes wish I had the old Ryobi and had the fuel leak fixed and give my son the Troy-Bilt:0)
P.S.
I can't tell by the OP's original statement whether he actually is in the "lawn business"("doing a leaf job") or whether he simply needs a residential quality trimmer(like we have recommended). He sure was put off by the pricing of Stihl & Echo trimmers!!