My system uses all barrow mod fittings now and out of the 38 barrow fittings I ordered and 23-27 used, none have leaked so barrow mod damn good in my books. I originally went with barrow mod fittings because they have the only good looking white fittings on the market the low price was a bonus but now that I've used them in my system and having 0 out of 26 used not leak at all, I'm impressed.
34 white 3/8th ID 5/8ths OD compression fittings.( I expected some of them to leak.. but lucky me I guess ? lol )
4 white 90 Degree Rotary fittings
Barrow products in general in my opinion look way nicer than their more expensive counter-parts from other brands, and the fact barrow mod fittings are cheaper than their counter-part and work just as well; that makes barrow mod products a no brainer.