Ultima vs. Older Televue barlows

Sorry for another barlow question (they seem to be very popular during the planetary viewing season).

I currently have both the 2x Ultima and 3x Antares (same as the Ultima) shorty barlows - my attempt to maximize eye relief at higher magnification. I use exclusively Ultima and UO ortho eyepieces in a 6" f/5 Newt and 8" SCT.

I have the opportunity to replace both with an older Televue 2.5x barlow (not a Powermate) yielding very similar magnification increments.

I know that the newer Televues are outstanding. However, given the Televue's older coatings and doublet configuration, is there any advantage to making this swap, or am I better just sticking with the Ultimas I have? I should note here that my budget will not allow the addition of a Powermate.

Thanks for your input.

I had the ultima 2x and switched to the Tele Vue. I have not noticed a difference, though the coatings on the Tele Vue are superior to the Ultima and it has a cemented doublet (two elements, two air to glass surfaces) verses three singlets (three lenses and six air to glass surfaces). Both barlows were great, but I think I like the Tele Vue better for some reason. Something cleaner about barlowing with it, like there is no barlow being used while the ultima would dim things a little. Another one I enjoyed was the Klee 2.8x (university optics) barlow.

I wouldn't worry about older tele vue coatings. I have one of their old binoviewers and a set of old plossls from them and the coatings are better than Ultima "red" in that their reflections are darker and duller. And of course, optical performance of anything Tele Vue (other than the 8-24 zoom) is outstanding.