I have four different solar filters that I use regularly. Here they are in order of quality:
1. I use a Meade 2" Solar Wedge on my Explore Scientific ED 102mm refractor. This is the clear winner by a very noticeable margin. I also use a Continuum filter and a UV/IR Cut filter with the wedge and it improves my imaging. This combo is, by far, the most expensive route to go for white light solar viewing/imaging. The wedge cost over $300... the Continuum filter is almost $200... the UV/IR Cut filter is around $130. So, it is pricey but provides the best white light solar viewing/imaging of the photosphere.
2. My Spectrum glass solar filter is the next best filter I own and use regularly. I use this on my Skywatcher ED 72mm refractor. I get crisp views of the sun with this filter and, honestly, it is simple to use. It provides crisp, contrasty and bright views. I just screw it down over my dew shield. Cost was in the $90 range (varies by size/aperture), if I remember correctly. I purchased it directly from Spectrum because everyone else seemed to be out-of-stock at the time.
3. My next best solar filter is Baader film. Everyone always raves about the Baader solar film but I find it quite disappointing compared to my two other filters above. It simply is not as crisp as the glass filter and it would be silly to compare it to my solar wedge because the solar wedge is that good. With the Baader film, I feel like I'm viewing through slightly frosted glass when using this filter... sort of a low contrast view. Then I move over to my Spectrum glass filter on my ED 72mm and it is bright, contrasty and crisp... sunspots really stand out and are crisp. The Baader film seems dull by comparison. The Baader film only cost me about $35 and I made a wood frame for it to clamp over my dew shield on my Celestron XLT 120mm refractor. Overall, I'm very disappointed in this filter though. It required the most work because I made the frame yet it provides less than stellar views compared to my other filters. Oh, and I feel it is very fragile compared to the first two filters mentioned above. I baby this filter because I am afraid of damaging it and it must be protected when stored so nothing presses on the filter material or, worse, punctures it. It does provide 'acceptable' viewing though at a low cost but, overall, I find it disappointing and a pain in the butt because of its fragility.
4. I also use a Celestron Eclipsmart filter on my Celestron 70mm f10 refractor. This filter is a mylar filter and it is clearly the worst of the bunch. It is better than not being able to view the sun at all and the filter only costs around $20 so, it is probably a worthwhile expenditure for a cheap beginner scope. I would say it is a decent beginner filter made for a specific beginner telescope so you can observe the sun so that is convenient and it is low cost. This filter is sold as an accessory specifically for the Celestron 70mm f10 refractor. For any other scope, though, I would not recommend purchasing a mylar filter.
My short list of solar filters to buy includes an Ha filter as well as a CaK filter which are significantly more expensive than the above mentioned filters.