Ciujbauanswered grow question 3 years ago I hope I'll be clear , I'm at first grow , but probably same as you , looked everywhere for a best price/profit ratio , reviews , videos , pro , cons , prices , long term , short term . I did all of this too and I came to a conclusion
I went for Mars-Hydro TS 1000(actually I bought the tent+light kit with no fan or exhaust) over the Spider farmer , but it was more a personal preference . Let me explain
So first I was thinking of buying the TS 600 , at first were few reviews and no certain answers , but then found about TS1000 , which had the dimmable option (2020 one) , around 50-60$ more , but with a lot more reviews and grows , more "transparent" spectrum (i've been aware lately about bad reviews on TS600 and that PPFD is not what they claim and that there's no evidence about "official spectrum measurements" - but this is recently - got my lights 2 months ago )
I've came across on Spider-farmer , compared each others reviews , for days , hell maybe weeks , but can't really differentiate them , some say that the samsung diodes used on SF2000 are better than the ones on TSW2000 (or at least some say )
I've found that the prices on Ali-express are 10-15% even 20% lower than the ones on "official" websites . I've seen the sizes I needed and was perfect for my needs .
My answer ? I went with Mars Hydro cuz of needs and budget , but I wouldn't change my mind on it . Spider farmer is around 20$ more than the Mars-hydro (or at least that was the prices back then)
See what you need and compare , I've read so many diaries here that TS2000 or SF2000 are very slightly different