I am currently trying to make up my mind between the Yamaha THR old or new series of desktop practice amplifiers and the (for me) cheaper and possibly much better alternative of using a GK 250ML (around 250€ used here in the EU). Although power is not a priority for me, the GK’s 100w of stereo power makes it capable of gigging, compared with the top of the range THR30w, and only 10 or 20w on other models. The GK also has its own FX loop, as well as a stereo Aux in (but no separate volume control). What I don’t know is how the GK compares with the THRs when used with modelling software at practice levels? I know that is where the THRs excel, and this is an important consideration for me. My second question is about the stereo separation from one channel to another - how well defined is this in the GK compared to the THRs? Finally, I also have a question about the 6.5” Pyle speakers fitted to the GK 250ML. Since at this age the speakers will most likely need to be replaced, would it be worthwhile replacing them with full range speakers, and if so, what would you recommend? I assume that both the GK and Yamaha speakers are guitar voiced speakers?