The standard approach is using a parallel LC circuit and either make a
tap or a link for the 50 Ohm connection. In this case, how should I
select the L and C, as there are multiple choices leading to the same
resonance frequency but with different Q values. Any suggestions?

Or, would another matching network be more desirable, for example in
terms of loss? An L-network might do the job, but it is not
immediately clear to me if it would have any advantages or
disadvantages over the parallel circuit. Any comments?

I will be running substantial power into the antenna, so it is
important that the solution does not result in excessive losses (heat)
or voltages (although this will probably be inevitable at the
feedpoint).

73 - Kris, TF3KX

GM Kris

I use an end fed, inverted L half wave on 160 meters on 160, 80 and 40
meters where it has a feed impedance of about 2600, 1600 and 700 Ohms
respectively. This allows a remote tuned L network to be used for a match to
50 Ohms on all 3 bands without need for switching the capacitor from end to
end of the inductor. My inductor is a piece of 2-1/2 inch miniductor, tap
switched with a motor driven switch, and a motor driven vac variable. It
allows a below 1.3:1 match across the entire band on all 3 bands and has
been a very effective HF antenna for some 15 years. The bottom of the
antenna ties to a control box thru a fairly small ceramic feedthru, (maybe 2
inches long) and Voltage has never been a problem even with 1500 Watts out.
Fed against a 90 foot well casing that just happens to be in the right
place, and a counterpoise under the flat top.

When you don't KNOW that your ground is zero Ohms, feed as little current
into it as possible!

Regards
W4ZCB