I only use the metal landing gear if it comes in the same box as the kit itself.
I have yet to have a styrene landing gear strut wilt or collapse on its own over time.
Ditto to both...
I have had good results scratching LG with Aluminum tube and the looks to me are more realistic and life-lik(e)
Well, there ya go.. Nothing looks more like metal like metal itself...
Personally, I'm more concerned with axles breaking under stress, rather than the struts... Of course, some kits are weighted, some not.. For instance, I didn't "weight" my 1/48 B-29, but rather I "trapped" a sheet-metal screw in the right nose-wheel half, then inserted the screw through the hole I drilled in the base, then added the washer/nut... The stress-point then is on the nose strut at the glue-joint in the gear-well, and the model's entire weight is supported on the mains.. This goes for all the "trike-gear" birds I build..
But I look over the axles pretty well, and sometimes it's just easier to replace the plastic axle with styrene-coated wire during the guild, rather than waiting for it break on it's own.. AMT's 1/48 Tigercats are one example of a kit that I did that on the nose-wheel...
If I can't trap a screw in a nose-wheel tire, I drill a hole in the bottom of the "flattend" tire, epxoy in a piece of Evergreen's styrene-coated wire, then pull it through the base, bending it over to "lock" the rod underneath..