all the parts used in my modifications come from old stocks that collected dust on the shelves and now they have a second life))) having a month of experience driving vado sl, I quickly understood where, how, and what is expected of him, so the original cassette, which not I am able to use it in flat terrain, I changed this heavy cassette (uf) to a light Xtr 11/34 which helped me to step up the gears that I use, significantly improving the comfort of driving. One note, to unscrew the original cassette you need solid long arm tools, xtr derailleur wiped from the dust over-serviced, changed the deore, it is not a significant change for the work culture but it looks better and it is alive again))), now the most important change of the shifter, I recommend xt or xtr, I have already explained why, thanks to the quick release function, we get an immediate and fully controlled gear change, it works 0 1. you press and there is a change, you do not wait for a change until you release the shifter. Regards, the next ones will be disc brakes, the original ones are 2mm thick and heavy, I will change it to describe whether it makes sense, regarding the wheel, the wheels are very good and light enough compared to my dt swiss. while replacing them with new DT Swiss wheels would be very expensive and I do not know if it would have contributed so much to the improvement in relation to the cost.