I could try an expensive Fractal but fear i will experience the same ...
When making music, every part of the chain, from the guitar's strings, pickups, the cable, the amp, or in this case the modeler, the speakers and cabinet or, in this case the power-amplifier and FRFR, contribute to generating the sound. It's a long chain of equally important parts and like they say, the chain is as strong as its weakest link. You can rarely get away from that.
Fractal's FM3 isn't expensive gear, by a long shot. It might be more expensive than some other company's smallest unit, but it's extremely well made and has the best algorithms available inside it - I've used several other brands over many years and I'm firmly convinced of that. It's an incredible and flexible tool, and in its category nothing will touch it. So, is it really expensive, or could it be the replacement of a weak link that results in a stronger chain? Don't spend money foolishly thinking some gizmo is the fix to bad playing or some other link that is weak. Keep them all balanced quality-wise and keep your playing ability on par with the gear.
I bought an FM3 because it's small and easily packed when I want something to use for practice when traveling. With a set of headphones and my phone or tablet I have a nice sounding rig that I can stream music to and play as loud as I want and nobody gets disturbed. But, it also works great on stage, and I can plug it into the FOH system and it'll work in live settings equally well. That's a lot of flexibility and beats hauling a combo amp. Would it beat the sound and convenience of the THR10? Definitely so for me, but you can only answer for you, again it's that honest appraisal of where you see yourself in the future and whether it's an investment in your goal, or just a frivolous expenditure.
And, remember, purchasing a good modeler will probably mean having to spend money on FRFR speakers or a power-amp and cabinet, additional cables, probably something to carry it in… the spending, learning and agonizing doesn't end when you buy a real modeler, instead it opens up a world of other things needed to keep that chain strong but it's part of a commitment toward where you want to be.