Do you use a Kleinulator?
I have a G_sharp as well. Combined with the Kleinlulator I get no loss of volume. The Kleinulator does change to tone of the amp ofcourse (for the better).
No the G-Sharp is the cheaper unit. So far so good, as others have reported the delays and reverbs are good with many many options you don't get on a pedal. The chorus effects are good enough for me, and I will be losing my Boss from the pedalboard soon, but to be fair I never used it much.
Vibratos and tremolos I'm not keen on so won't comment, however the Flanger and Phaser sounds I think are poor. I've got an EVH MXR unit on my pedal board and it is much better than the G# so thats staying.
As I needed a delay pedal, and wanted a reverb unit with this amp, the G# was an easy choice to make coming in at less than half the cost of two good pedals. One downside is that even with the volume maxed on the G#, there is a loss of volume with it in the loop, and though its difficult to hear, there is a loss of tone, but only very marginal. The bypass is not a hardwired bypass so the signal stays degraded even when no effects are on. I must add though that this is very marginal, and indeed might in part be due to the signal level drop not driving the PI or powertubes quite as hard.
My plans are to, at the very least, make some sort of hard bypass switch to take the unit out of the loop and then I will need something to boost the signal when it is in circuit. I'm hoping the BBE Max-X2 will do this, but I'm not that confident. I will probably end up with a Kleinulator, though I intend modding this to have a hardbypass function, either on the box or via a footswitch. I'm not prepared to trade off tone for effects in the loop so the bypass will allow the OTS to sing its heart out when I need it to.