It is clearly meant to stack. Hence the warning about max. 4 IP instead of the usual "no other initiative enhancers".

That might also mean that if you have an uber mage who's throwing a force 8 Improved Reflexes spell with a Power Focus and high Sorcery, he can only get 3 extra IP.

I'd be more interested to see if wired reflexes and the like affects a character's VR initiative passes. The text on the matter lists the additional passes you get in VR as a bonus (+ 1 for VR, or +2 for hot sim VR, as I recall)--yet Technomancers get their 3 VR passes as a flat number, so by the RAW, it wouldn't work for them--weird.

Anyway, since the OP specified that price isn't an object--and one of the posters clarified that you can get delta grade bioware--I'd say Synaptic Booster all the way. Anything worth doing is worth doing three or four times a turn, and .5 to .75 escense is a small price to pay for that.

Physical initiative and reaction bonuses do not affect VR (though they do affect AR as it happens at regular "meat" speeds): you take into account different factors to get your Physical/Astral/VR "reaction" and initiative values/passes and though the rules handling said "factors" are similar, the sources to do it are not.

While on VR, initiative (for metahumans) is equal to Intuition+Response (+1 if "Hot Simmed" and usually you also get a penalty as well if you are running too many programs) and you have two initiative passes (add one more pass to that if "Hot Simmed"): Technomancers are always considered to be "Hot Simmed" (poor bastards (IMG:style_emoticons/default/wobble.gif) ) and that is the reason for them boasting 3 passes while on VR.

By the way, you can get a Simsense Booster to add one to your VR passes (if you are a poor bast... I mean, Technomancer you can also choose going Overclocking instead (IMG:style_emoticons/default/biggrin.gif) )

Wow. I have a question! *waves hand wildly in the air* Can any of you actually remember the name of the thread you're fighting in? *ducks*

...

Who's fighting?

looks to me like its more of an effort to summon a high-force fire elemental.

really, you want cyber to do things you cannot do otherwise. cybereyes are useful for targeting, and extra IP always help. a datajack is great for knowsofts/linguasofts.

Synaptic booster 2 (.8e alpha, 320,000 (IMG:style_emoticons/default/nuyen.gif) ), rating 2 cybereyes[vision mag, thermographic, flare comp, smartlink] (.15e), dtajack (.05e)
not exactly affordable at chargen, but that dosent stop too many people. it may be affordable after a few well paying runs.

now, if your magic-user is type O (and you can technically only do that with an adept), synaptic booster 3, with muscle toner 2 and datajack.

As was stated in previous posts (in this thread I think), Type O does nothing for cultured bioware. It doesn't make it any better compatability (getting delta grade for standard grade prices).