Either the GP @ £29 or the RA @ £31 will do ya
The orange ifrit is a 25k rpm neo motor - guessing like 18tpa
Recently the SHS's seem to be a bit lower than expected 30k (a 8.4v)
probably more like a 28k
The GP 16tpa says 33.5k on 11.1v (12.6v fully fully charged Lipo)
so in "theory" 33.5k divided by 1.55 will give you a 21.6k on a 2 cell Lipo
The RA I think the oem is rated @ around 39k on 11.1v
so in "theory" 39k divided by 1.55 will give you a 25.16k on a 2 cell Lipo
So the RA vented can might be near the performance of the Ifrit from new
maybe a smidge over, but shouldn't be that much - max 10% faster if at say nearly 28k (8.4v)
The GP might be where the Ifrit was performing after say 10k bb's but will draw less amps
and still be quicker than 22 tpa motor
So really either one will do but I might lean towards the RA myself
But I'd expect a smidge less amp draw on the GP motor
Yeah RA first choice & GP close second, either is gonna better than your old Ifrit
But I'd buy some new brushes for a few quid, clean up the old one and pop them in
so you got a fairly decent spare Ifrit should you need it
The old carbon brushes do wear out & make a mess, unless armature/commutator is fucked
I reckon a new set of brushes is worth a go, or hunt around in a shitty stock motor for brushes
(but stock motor/brushes are quite shit, but nowt to lose for a decent spare motor cleaned up)
I've taken a rough stab at the motors Vs Irit - but don't sue me if my figures are not 100% accurate
I did my best to advise & explain my honest opinion on their expected performance etc...
