first impressions (day 1; hour 1)
1. the ProtonPro is just a wee bit longer than the original Proton. the diff. in length is just about the height of the expose portion of the tail cap when it is fully screwed onto the body of the light.
2. beam color: IMO, just a touch of warmth to it - a very nice hue/color to the light/beam - good job LRI/PhotonLight.
3. beam pattern: a) nice bright spot (on the smaller side, but *NOT* a small spot, IMO - still very useful) with a slightly darkened center (barely noticeably - in this regard it reminds me of the Olight T20 "spot") - easily 2x as bright to the eye as the original Proton. b) typical corona - still quite bright with an uneven margin c) outside of the corona is a classic "donut" which is as wide as the diameter of the central "spot". as such, the donut is wider than on some other lights (e.g. Muyshondt Nautilus). d) narrow yellowish halo around the relatively dark "donut" e) very nice spillbeam consisting of a wide area and then a ring/halo around it which is approx. 1/3 as wide as the spillbeam and noticeably darker than the spillbeam, but still bright. f) two more rings/halos appear outside the spillbeam halo; they are quite a bit darker and not really useful for lighting.
final observation:
for those who loved the "flood" pattern of the original Proton (count me amongst them), they might be a bit disappointed in the ProtonPro. however, it is a Cree and one knows going in what that means - this is NOT a criticism, just an observation. the "Pro" is NOT intended to be a flood output type of light given its Cree with a smooth reflector.
i'm very happy to have purchased the ProtonPro. however, i would definitely buy another original Proton (i already have two of them) if they upgraded it to the newer DS Nichia LEDs. IMO, there is still a market for a 6x5mm DS white LED Proton. imagine ~100lumens (assuming the current 6x5mm CS Nichia white LED Proton is ~50lumens as Mfr. claims) of "flood" from a light as small as a Proton!! I REALLY WANT ONE if it is ever brought to market.
to my way of thinking, the ProtonPro, while it appears to be a very fine light (based upon the excellent heritage of the original Proton), there is not as much to distinguish it (other than the inclusion of a RED 5mm LED and "infinite" adjustability of the light o.p. level - or at least too many digital "steps" to count [256??? steps???] from other small 1xAA Cree flashlights (e.g. Fenix L1D-CE). the original Proton had a character all its own due to its 6x5mm Nichia CS white LEDs. when throw isn't required, the flood output of an array of 5mm LEDs is quite userful - more so, than a Cree.
LRI/PhotonLight ***PLEASE*** market an original Proton with upgraded DS Nichia LEDs.
anyone else who also would like to see this, please reply so LRI/PhotonLight can gauge any interest.