Time Trial / Time Trialling / TT

Thanks to ^ and ^^ for reminding me that there are still big improvements to be made!!

To that end (and I realise that fitness and experience are both going to be bringing me much more substantial gains) I have earmarked the planet x 82/101 wheels as my next purchase, is this the best use of the cash in buying speed or would a professional bike fit and a aero helmet be a better option?

Bike is a trek equinox which is essentially the right size, helmet is a giro atmos and I have a garmin with speed and cadence on the bike...

Suggestions including keep your cash in your pocket and train for a while welcome!

What sort of wheels do you have now? Better position and probably an aero helmet are almost certainly worth more time than wheel choice. Do you ride in a skinsuit?Your body provides soemthing like 70% of the total drag so it's more important to get that right. Nice wheels always look nice though so that's why people always buy them :)