Lately, i bought some resistance bands on ebay for just $18. They are 50lb resistance which is perfect. The reason is b/c the have aesthetic flaws like chalky surfaces etc...
I realize that it has helped me in getting the 90% + RM weights up smoother and faster.
Regarding front squats, it is great for jumping posture and lower back strength. The toughest part with front squat is keeping a solid lower back, it is a lot easier on the quads.
Regarding the RVJ, i do a lot better with a SVJ or 3 step RVJ then a true RVJ. Not sure how those blacks (mostly) like tdub or jusfly just runs up there jumps 50+inches. they must have kangaroo genes.