Since you already have the RS4, and are probably somewhat comfortable with
it, I'd say go with upgrading. You can do it little by little, as your
budget, skills, and interest allow. Start with bearings, and you can go
racing. After that, go for ball diffs, then universals. Remember, this can
be done over time, so rather than comparing the cost of upgrading the RS4
vs. the TA03 Sport, look at how much you already have invested in the RS4.
Also, the TA03 Pro is close to your Sport, other than bearings and ball
diffs, so you'd probably still end up buying a lot of hop ups if you are
into racing. Good luck!
>I have an RS4 Sport right now and I love it. Problem is, the racing bug
>bit me, and I want to upgrade. Ball bearings, graphite chassis, and
>turnbuckles will cost about $100. However, I've seen an ad for the TA03F
>Pro for $119. Would I be better off upgrading the RS4 Sport, getting the
>TA03F Pro, or saving up for the RS4 Pro?