gDiapers with Disposable Inserts are my wife and my favorite diaper system. They get 5 stars for excellent performance, convenience, and environmental qualities.
We have found gDiapers to be far superior to conventional disposable diapers in terms of leak protection, especially against blowouts. Leaks only seem to occur if we leave him in the diaper too long without changing it or double-lining it (which is very effective overnight).
At home we like to flush the inserts and know that we aren't contributing as much to landfills as we would with conventional disposables, while on the road we can still enjoy the same convenience of tossing the liner as we would with fully disposable diapers. We also like that the diapers are made with minimal chemical treatments. Our son will develop diaper rash quickly in disposable diapers and does not with gDiapers (and putting him in gDiapers after disposables will clear up his rash, no ointment required).
We highly recommend trying gDiapers with the Disposable Inserts if you are considering or currently using conventional disposable diapers. The cost is the same and we think the vastly superior performance of gDiapers along with the flexibility in disposing of the inserts makes them an excellent diaper system.