I've had some experience upgrading a Strat with parts from Guitar Fetish, and overall, I was quite impressed, especially considering the budget-friendly aspect. The pickups, in particular, offered a noticeable improvement in tone over the stock ones. They might not rival some of the higher-end brands like Seymour Duncan or DiMarzio, but for the price, they delivered a solid performance. I found the tone was richer and more defined, which made my guitar sound much brighter and livelier.
Regarding the hardware, such as bridges and tuners, they were decent and worked well for my needs. While they may not have the same level of precision as more expensive components, they've held up over time, which speaks to their reliability and durability. If you're looking for a substantial upgrade without breaking the bank, Guitar Fetish could be a good option.
One thing to keep in mind is to carefully check customer reviews and maybe even look up some demo videos to get a real sense of how they sound. It might also be helpful to compare specs and reviews with similar products from other brands like Wilkinson or Fender's own range.
Have you considered what kind of tone you're aiming for with your upgrade? Knowing that might help narrow down the best option for your style.