Have had 3 trailers, two were indespension and one was sbs. all very good and roller coaster trailers. If you call SBS direct you may be able to get a good deal that fits your budget, I did.
I would say that it does not pay to scrimp too much on a trailer, I have seen people struggeling with bunk trailers and cheap trailers and old knackered trailers and ones that are just not set up for the boat correctly, that just add a lot of stress and agro and wasted time to the launch and recovery.
My trailers were simple winch on push off items that were always very simple to use with minimal effort. the guiding posts that some people have at the rear seem to work well as well and would consider them if i ever got another trailer.
depending on where you launch and recover it can be a tricky exercise with waves and wash and people queueing and it is sometimes just really nice to get the boat near the trailer, and then on it simply, and away.
I think a good easy to use trailer enhances the boating experience and leads to a less stressful start and finish to the day.